64265215 has 24 divisors (see below), whose sum is σ = 91634112. Its totient is φ = 43122240.

The previous prime is 64265213. The next prime is 64265237. The reversal of 64265215 is 51256246.

It is not a de Polignac number, because 64265215 - 2¹ = 64265213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64265213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8725 + ... + 14305.

It is an arithmetic number, because the mean of its divisors is an integer number (3818088).

Almost surely, 2^64265215 is an apocalyptic number.

64265215 is a deficient number, since it is larger than the sum of its proper divisors (27368897).

64265215 is a wasteful number, since it uses less digits than its factorization.

64265215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5647 (or 5640 counting only the distinct ones).

The product of its digits is 14400, while the sum is 31.

The square root of 64265215 is about 8016.5588003831. The cubic root of 64265215 is about 400.5517697753.

The spelling of 64265215 in words is "sixty-four million, two hundred sixty-five thousand, two hundred fifteen".