57680691 has 8 divisors (see below), whose sum is σ = 77461440. Its totient is φ = 38176872.

The previous prime is 57680687. The next prime is 57680717. The reversal of 57680691 is 19608675.

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

It is not a de Polignac number, because 57680691 - 2² = 57680687 is a prime.

It is a super-2 number, since 2×57680691² = 6654124228474962, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (57680611) 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, 68745 + ... + 69578.

It is an arithmetic number, because the mean of its divisors is an integer number (9682680).

Almost surely, 2^57680691 is an apocalyptic number.

57680691 is a deficient number, since it is larger than the sum of its proper divisors (19780749).

57680691 is a wasteful number, since it uses less digits than its factorization.

57680691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138465.

The product of its (nonzero) digits is 90720, while the sum is 42.

The square root of 57680691 is about 7594.7805103242. The cubic root of 57680691 is about 386.3760083630.

The spelling of 57680691 in words is "fifty-seven million, six hundred eighty thousand, six hundred ninety-one".