215464265 has 16 divisors (see below), whose sum is σ = 263088000. Its totient is φ = 169373952.

The previous prime is 215464243. The next prime is 215464297. The reversal of 215464265 is 562464512.

It is a cyclic number.

It is not a de Polignac number, because 215464265 - 2¹⁸ = 215202121 is a prime.

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, 81281 + ... + 83889.

It is an arithmetic number, because the mean of its divisors is an integer number (16443000).

Almost surely, 2^215464265 is an apocalyptic number.

It is an amenable number.

215464265 is a deficient number, since it is larger than the sum of its proper divisors (47623735).

215464265 is a wasteful number, since it uses less digits than its factorization.

215464265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2896.

The product of its digits is 57600, while the sum is 35.

The square root of 215464265 is about 14678.7010665113. The cubic root of 215464265 is about 599.5035383972.

The spelling of 215464265 in words is "two hundred fifteen million, four hundred sixty-four thousand, two hundred sixty-five".