64620012 has 24 divisors (see below), whose sum is σ = 151194736. Its totient is φ = 21480768.

The previous prime is 64619999. The next prime is 64620047. The reversal of 64620012 is 21002646.

It is a happy number.

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, 2743 + ... + 11694.

Almost surely, 2^64620012 is an apocalyptic number.

It is an amenable number.

64620012 is an abundant number, since it is smaller than the sum of its proper divisors (86574724).

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

64620012 is a wasteful number, since it uses less digits than its factorization.

64620012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14817 (or 14815 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 64620012 is about 8038.6573505779. The cubic root of 64620012 is about 401.2875428037.

Adding to 64620012 its reverse (21002646), we get a palindrome (85622658).

The spelling of 64620012 in words is "sixty-four million, six hundred twenty thousand, twelve".