864727 has 4 divisors (see below), whose sum is σ = 888136. Its totient is φ = 841320.

The previous prime is 864707. The next prime is 864733. The reversal of 864727 is 727468.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-864727 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 864692 and 864701.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (864707) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11649 + ... + 11722.

It is an arithmetic number, because the mean of its divisors is an integer number (222034).

2⁸⁶⁴⁷²⁷ is an apocalyptic number.

864727 is a deficient number, since it is larger than the sum of its proper divisors (23409).

864727 is a wasteful number, since it uses less digits than its factorization.

864727 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23408.

The product of its digits is 18816, while the sum is 34.

The square root of 864727 is about 929.9069845958. The cubic root of 864727 is about 95.2707695309.

The spelling of 864727 in words is "eight hundred sixty-four thousand, seven hundred twenty-seven".