72526865 has 16 divisors (see below), whose sum is σ = 88829136. Its totient is φ = 56832000.

The previous prime is 72526859. The next prime is 72526873. The reversal of 72526865 is 56862527.

It can be written as a sum of positive squares in 8 ways, for example, as 55696 + 72471169 = 236^2 + 8513^2 .

It is not a de Polignac number, because 72526865 - 2⁴ = 72526849 is a prime.

It is a super-2 number, since 2×72526865² = 10520292293456450, which contains 22 as substring.

It is a Duffinian number.

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, 122009 + ... + 122601.

It is an arithmetic number, because the mean of its divisors is an integer number (5551821).

Almost surely, 2^72526865 is an apocalyptic number.

It is an amenable number.

72526865 is a deficient number, since it is larger than the sum of its proper divisors (16302271).

72526865 is a wasteful number, since it uses less digits than its factorization.

72526865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1060.

The product of its digits is 201600, while the sum is 41.

The square root of 72526865 is about 8516.2706039674. The cubic root of 72526865 is about 417.0290433260.

The spelling of 72526865 in words is "seventy-two million, five hundred twenty-six thousand, eight hundred sixty-five".