680957957 has 8 divisors (see below), whose sum is σ = 689109120. Its totient is φ = 672818080.

The previous prime is 680957909. The next prime is 680957969. The reversal of 680957957 is 759759086.

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 680957957 - 2²⁸ = 412522501 is a prime.

It is a super-3 number, since 3×680957957³ (a number of 27 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (680957357) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 223748 + ... + 226770.

It is an arithmetic number, because the mean of its divisors is an integer number (86138640).

Almost surely, 2^680957957 is an apocalyptic number.

It is an amenable number.

680957957 is a deficient number, since it is larger than the sum of its proper divisors (8151163).

680957957 is a wasteful number, since it uses less digits than its factorization.

680957957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5643.

The product of its (nonzero) digits is 4762800, while the sum is 56.

The square root of 680957957 is about 26095.1711433361. The cubic root of 680957957 is about 879.7786792769.

Subtracting 680957957 from its reverse (759759086), we obtain a square (78801129 = 8877²).

The spelling of 680957957 in words is "six hundred eighty million, nine hundred fifty-seven thousand, nine hundred fifty-seven".