864904755 has 32 divisors (see below), whose sum is σ = 1625783040. Its totient is φ = 387089280.

The previous prime is 864904751. The next prime is 864904769. The reversal of 864904755 is 557409468.

It is not a de Polignac number, because 864904755 - 2² = 864904751 is a prime.

It is a super-2 number, since 2×864904755² = 1496120470443220050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (864904751) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 199465 + ... + 203754.

It is an arithmetic number, because the mean of its divisors is an integer number (50805720).

Almost surely, 2^864904755 is an apocalyptic number.

864904755 is a deficient number, since it is larger than the sum of its proper divisors (760878285).

864904755 is a wasteful number, since it uses less digits than its factorization.

864904755 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 403251.

The product of its (nonzero) digits is 1209600, while the sum is 48.

The square root of 864904755 is about 29409.2630815531. The cubic root of 864904755 is about 952.7729709985.

The spelling of 864904755 in words is "eight hundred sixty-four million, nine hundred four thousand, seven hundred fifty-five".