864627 has 4 divisors (see below), whose sum is σ = 1152840. Its totient is φ = 576416.

The previous prime is 864623. The next prime is 864629. The reversal of 864627 is 726468.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 864627 - 2² = 864623 is a prime.

It is a D-number.

It is not an unprimeable number, because it can be changed into a prime (864623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 144102 + ... + 144107.

It is an arithmetic number, because the mean of its divisors is an integer number (288210).

2⁸⁶⁴⁶²⁷ is an apocalyptic number.

864627 is a deficient number, since it is larger than the sum of its proper divisors (288213).

864627 is a wasteful number, since it uses less digits than its factorization.

864627 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 288212.

The product of its digits is 16128, while the sum is 33.

The square root of 864627 is about 929.8532142225. The cubic root of 864627 is about 95.2670969096.

The spelling of 864627 in words is "eight hundred sixty-four thousand, six hundred twenty-seven".