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680046149 = 4723362099
BaseRepresentation
bin101000100010001…
…010111001000101
31202101121220221102
4220202022321011
52343042434044
6151251425445
722565203556
oct5042127105
91671556842
10680046149
11319960812
1216b8b5285
13aab73c93
146646232d
153ea8024e
hex2888ae45

680046149 has 8 divisors (see below), whose sum is σ = 697507200. Its totient is φ = 662709856.

The previous prime is 680046139. The next prime is 680046151. The reversal of 680046149 is 941640086.

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 680046149 - 28 = 680045893 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 (680046139) 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, 20099 + ... + 42000.

It is an arithmetic number, because the mean of its divisors is an integer number (87188400).

Almost surely, 2680046149 is an apocalyptic number.

It is an amenable number.

680046149 is a deficient number, since it is larger than the sum of its proper divisors (17461051).

680046149 is a wasteful number, since it uses less digits than its factorization.

680046149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62379.

The product of its (nonzero) digits is 41472, while the sum is 38.

The square root of 680046149 is about 26077.6944724797. The cubic root of 680046149 is about 879.3858270495.

The spelling of 680046149 in words is "six hundred eighty million, forty-six thousand, one hundred forty-nine".

Divisors: 1 47 233 10951 62099 2918653 14469067 680046149