64980624 has 20 divisors (see below), whose sum is σ = 167866736. Its totient is φ = 21660192.

The previous prime is 64980623. The next prime is 64980631. The reversal of 64980624 is 42608946.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (64980623) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 676834 + ... + 676929.

Almost surely, 2^64980624 is an apocalyptic number.

It is an amenable number.

64980624 is an abundant number, since it is smaller than the sum of its proper divisors (102886112).

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

64980624 is a wasteful number, since it uses less digits than its factorization.

64980624 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1353774 (or 1353768 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 39.

The square root of 64980624 is about 8061.0560102260. The cubic root of 64980624 is about 402.0326203078.

The spelling of 64980624 in words is "sixty-four million, nine hundred eighty thousand, six hundred twenty-four".