215233665 has 16 divisors (see below), whose sum is σ = 345883200. Its totient is φ = 114288192.

The previous prime is 215233649. The next prime is 215233687. The reversal of 215233665 is 566332512.

It is not a de Polignac number, because 215233665 - 2⁴ = 215233649 is a prime.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 27895 + ... + 34764.

It is an arithmetic number, because the mean of its divisors is an integer number (21617700).

Almost surely, 2^215233665 is an apocalyptic number.

It is an amenable number.

215233665 is a deficient number, since it is larger than the sum of its proper divisors (130649535).

215233665 is a wasteful number, since it uses less digits than its factorization.

215233665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62896.

The product of its digits is 32400, while the sum is 33.

The square root of 215233665 is about 14670.8440452484. The cubic root of 215233665 is about 599.2895897497.

The spelling of 215233665 in words is "two hundred fifteen million, two hundred thirty-three thousand, six hundred sixty-five".