64662216 has 48 divisors (see below), whose sum is σ = 163871760. Its totient is φ = 21262080.

The previous prime is 64662209. The next prime is 64662251. The reversal of 64662216 is 61226646.

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 306351 + ... + 306561.

It is an arithmetic number, because the mean of its divisors is an integer number (3413995).

Almost surely, 2^64662216 is an apocalyptic number.

It is an amenable number.

64662216 is an abundant number, since it is smaller than the sum of its proper divisors (99209544).

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

64662216 is a wasteful number, since it uses less digits than its factorization.

64662216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 446 (or 329 counting only the distinct ones).

The product of its digits is 20736, while the sum is 33.

The square root of 64662216 is about 8041.2819873451. The cubic root of 64662216 is about 401.3748854770.

The spelling of 64662216 in words is "sixty-four million, six hundred sixty-two thousand, two hundred sixteen".