357640857 has 36 divisors (see below), whose sum is σ = 632576880. Its totient is φ = 193605552.

The previous prime is 357640837. The next prime is 357640859. The reversal of 357640857 is 758046753.

It is not a de Polignac number, because 357640857 - 2⁶ = 357640793 is a prime.

It is not an unprimeable number, because it can be changed into a prime (357640859) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 12963 + ... + 29720.

It is an arithmetic number, because the mean of its divisors is an integer number (17571580).

Almost surely, 2^357640857 is an apocalyptic number.

It is an amenable number.

357640857 is a deficient number, since it is larger than the sum of its proper divisors (274936023).

357640857 is a wasteful number, since it uses less digits than its factorization.

357640857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42722 (or 42712 counting only the distinct ones).

The product of its (nonzero) digits is 705600, while the sum is 45.

The square root of 357640857 is about 18911.3948983146. The cubic root of 357640857 is about 709.8213244763.

The spelling of 357640857 in words is "three hundred fifty-seven million, six hundred forty thousand, eight hundred fifty-seven".