864755 has 8 divisors (see below), whose sum is σ = 1048992. Its totient is φ = 684288.

The previous prime is 864737. The next prime is 864757. The reversal of 864755 is 557468.

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 864755 - 2⁶ = 864691 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (864757) 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, 407 + ... + 1376.

It is an arithmetic number, because the mean of its divisors is an integer number (131124).

2⁸⁶⁴⁷⁵⁵ is an apocalyptic number.

864755 is a deficient number, since it is larger than the sum of its proper divisors (184237).

864755 is a wasteful number, since it uses less digits than its factorization.

864755 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1885.

The product of its digits is 33600, while the sum is 35.

The square root of 864755 is about 929.9220397431. The cubic root of 864755 is about 95.2717978141.

The spelling of 864755 in words is "eight hundred sixty-four thousand, seven hundred fifty-five".