64605216 has 48 divisors (see below), whose sum is σ = 182637504. Its totient is φ = 19878144.

The previous prime is 64605197. The next prime is 64605223. The reversal of 64605216 is 61250646.

It is a tau number, because it is divible by the number of its divisors (48).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24636 + ... + 27131.

It is an arithmetic number, because the mean of its divisors is an integer number (3804948).

Almost surely, 2^64605216 is an apocalyptic number.

It is an amenable number.

64605216 is an abundant number, since it is smaller than the sum of its proper divisors (118032288).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

64605216 is a wasteful number, since it uses less digits than its factorization.

64605216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51793 (or 51785 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 64605216 is about 8037.7369949508. The cubic root of 64605216 is about 401.2569129543.

The spelling of 64605216 in words is "sixty-four million, six hundred five thousand, two hundred sixteen".