64412215 has 24 divisors (see below), whose sum is σ = 90329040. Its totient is φ = 43964928.

The previous prime is 64412197. The next prime is 64412281. The reversal of 64412215 is 51221446.

It is a happy number.

It is not a de Polignac number, because 64412215 - 2⁷ = 64412087 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 64412215.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 68871 + ... + 69799.

It is an arithmetic number, because the mean of its divisors is an integer number (3763710).

Almost surely, 2^64412215 is an apocalyptic number.

64412215 is a deficient number, since it is larger than the sum of its proper divisors (25916825).

64412215 is a wasteful number, since it uses less digits than its factorization.

64412215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1231 (or 1224 counting only the distinct ones).

The product of its digits is 1920, while the sum is 25.

The square root of 64412215 is about 8025.7220858936. The cubic root of 64412215 is about 400.8569440562.

The spelling of 64412215 in words is "sixty-four million, four hundred twelve thousand, two hundred fifteen".