65455215 has 16 divisors (see below), whose sum is σ = 119689728. Its totient is φ = 29922336.

The previous prime is 65455207. The next prime is 65455259. The reversal of 65455215 is 51255456.

It is not a de Polignac number, because 65455215 - 2³ = 65455207 is a prime.

It is a congruent 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, 311587 + ... + 311796.

It is an arithmetic number, because the mean of its divisors is an integer number (7480608).

Almost surely, 2^65455215 is an apocalyptic number.

65455215 is a deficient number, since it is larger than the sum of its proper divisors (54234513).

65455215 is a wasteful number, since it uses less digits than its factorization.

65455215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 623398.

The product of its digits is 30000, while the sum is 33.

The square root of 65455215 is about 8090.4397284696. The cubic root of 65455215 is about 403.0090058678.

The spelling of 65455215 in words is "sixty-five million, four hundred fifty-five thousand, two hundred fifteen".