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680900431 = 6733130703
BaseRepresentation
bin101000100101011…
…011011101001111
31202110020022210111
4220211123131033
52343302303211
6151322020451
722605362311
oct5045333517
91673208714
10680900431
1131a394632
12170047727
13ab0b2a83
14666057b1
153eb9d421
hex2895b74f

680900431 has 8 divisors (see below), whose sum is σ = 693173504. Its totient is φ = 668689560.

The previous prime is 680900413. The next prime is 680900449. The reversal of 680900431 is 134009086.

It is an interprime number because it is at equal distance from previous prime (680900413) and next prime (680900449).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-680900431 is a prime.

It is a super-2 number, since 2×6809004312 = 927250793871971522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 680900393 and 680900402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (680900401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6826 + ... + 37528.

It is an arithmetic number, because the mean of its divisors is an integer number (86646688).

Almost surely, 2680900431 is an apocalyptic number.

680900431 is a deficient number, since it is larger than the sum of its proper divisors (12273073).

680900431 is a wasteful number, since it uses less digits than its factorization.

680900431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31101.

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 680900431 is about 26094.0688854766. The cubic root of 680900431 is about 879.7539045836.

The spelling of 680900431 in words is "six hundred eighty million, nine hundred thousand, four hundred thirty-one".

Divisors: 1 67 331 22177 30703 2057101 10162693 680900431