864146657 has 16 divisors (see below), whose sum is σ = 1003492800. Its totient is φ = 735863040.

The previous prime is 864146623. The next prime is 864146693. The reversal of 864146657 is 756641468.

It is not a de Polignac number, because 864146657 - 2⁸ = 864146401 is a prime.

It is not an unprimeable number, because it can be changed into a prime (864146357) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4628 + ... + 41829.

It is an arithmetic number, because the mean of its divisors is an integer number (62718300).

Almost surely, 2^864146657 is an apocalyptic number.

It is an amenable number.

864146657 is a deficient number, since it is larger than the sum of its proper divisors (139346143).

864146657 is a wasteful number, since it uses less digits than its factorization.

864146657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46576.

The product of its digits is 967680, while the sum is 47.

The square root of 864146657 is about 29396.3714937745. The cubic root of 864146657 is about 952.4945178256.

The spelling of 864146657 in words is "eight hundred sixty-four million, one hundred forty-six thousand, six hundred fifty-seven".