680355739 has 12 divisors (see below), whose sum is σ = 791932464. Its totient is φ = 582795024.

The previous prime is 680355737. The next prime is 680355749. The reversal of 680355739 is 937553086.

It is not a de Polignac number, because 680355739 - 2¹ = 680355737 is a prime.

It is a super-2 number, since 2×680355739² = 925767863180472242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (680355733) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 98937 + ... + 105589.

It is an arithmetic number, because the mean of its divisors is an integer number (65994372).

Almost surely, 2^680355739 is an apocalyptic number.

680355739 is a deficient number, since it is larger than the sum of its proper divisors (111576725).

680355739 is a wasteful number, since it uses less digits than its factorization.

680355739 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8754 (or 8747 counting only the distinct ones).

The product of its (nonzero) digits is 680400, while the sum is 46.

The square root of 680355739 is about 26083.6297129061. The cubic root of 680355739 is about 879.5192531684.

The spelling of 680355739 in words is "six hundred eighty million, three hundred fifty-five thousand, seven hundred thirty-nine".