64215412 has 12 divisors (see below), whose sum is σ = 112492996. Its totient is φ = 32074560.

The previous prime is 64215401. The next prime is 64215439. The reversal of 64215412 is 21451246.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 57214096 + 7001316 = 7564^2 + 2646^2 .

It is a hoax number, since the sum of its digits (25) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3639 + ... + 11902.

Almost surely, 2^64215412 is an apocalyptic number.

It is an amenable number.

64215412 is a deficient number, since it is larger than the sum of its proper divisors (48277584).

64215412 is a wasteful number, since it uses less digits than its factorization.

64215412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16578 (or 16576 counting only the distinct ones).

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

The square root of 64215412 is about 8013.4519403313. The cubic root of 64215412 is about 400.4482724419.

Adding to 64215412 its reverse (21451246), we get a palindrome (85666658).

The spelling of 64215412 in words is "sixty-four million, two hundred fifteen thousand, four hundred twelve".