872531065 has 16 divisors (see below), whose sum is σ = 1197624960. Its totient is φ = 597801600.

The previous prime is 872531057. The next prime is 872531087. The reversal of 872531065 is 560135278.

It is not a de Polignac number, because 872531065 - 2³ = 872531057 is a prime.

It is a super-2 number, since 2×872531065² = 1522620918780068450, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34165 + ... + 53965.

It is an arithmetic number, because the mean of its divisors is an integer number (74851560).

Almost surely, 2^872531065 is an apocalyptic number.

It is an amenable number.

872531065 is a deficient number, since it is larger than the sum of its proper divisors (325093895).

872531065 is a wasteful number, since it uses less digits than its factorization.

872531065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21072.

The product of its (nonzero) digits is 50400, while the sum is 37.

The square root of 872531065 is about 29538.6368168878. The cubic root of 872531065 is about 955.5651434173.

The spelling of 872531065 in words is "eight hundred seventy-two million, five hundred thirty-one thousand, sixty-five".