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680057783 = 1746378627
BaseRepresentation
bin101000100010001…
…101101110110111
31202101122111220022
4220202031232313
52343043322113
6151251555355
722565252516
oct5042155667
91671574808
10680057783
11319969529
1216b8bbb5b
13aab79372
146646667d
153ea83908
hex2888dbb7

680057783 has 8 divisors (see below), whose sum is σ = 720299952. Its totient is φ = 639842176.

The previous prime is 680057753. The next prime is 680057803. The reversal of 680057783 is 387750086.

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

It is a cyclic number.

It is not a de Polignac number, because 680057783 - 212 = 680053687 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (680057713) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 74516 + ... + 83142.

It is an arithmetic number, because the mean of its divisors is an integer number (90037494).

Almost surely, 2680057783 is an apocalyptic number.

680057783 is a deficient number, since it is larger than the sum of its proper divisors (40242169).

680057783 is a wasteful number, since it uses less digits than its factorization.

680057783 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13281.

The product of its (nonzero) digits is 282240, while the sum is 44.

The square root of 680057783 is about 26077.9175357236. The cubic root of 680057783 is about 879.3908417662.

The spelling of 680057783 in words is "six hundred eighty million, fifty-seven thousand, seven hundred eighty-three".

Divisors: 1 17 4637 8627 78829 146659 40003399 680057783