64534216 has 16 divisors (see below), whose sum is σ = 124272540. Its totient is φ = 31394880.

The previous prime is 64534207. The next prime is 64534237. The reversal of 64534216 is 61243546.

It can be written as a sum of positive squares in 2 ways, for example, as 63202500 + 1331716 = 7950^2 + 1154^2 .

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, 108715 + ... + 109306.

Almost surely, 2^64534216 is an apocalyptic number.

It is an amenable number.

64534216 is a deficient number, since it is larger than the sum of its proper divisors (59738324).

64534216 is a wasteful number, since it uses less digits than its factorization.

64534216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 218064 (or 218060 counting only the distinct ones).

The product of its digits is 17280, while the sum is 31.

The square root of 64534216 is about 8033.3191147869. The cubic root of 64534216 is about 401.1098676364.

The spelling of 64534216 in words is "sixty-four million, five hundred thirty-four thousand, two hundred sixteen".