64602400620 has 24 divisors (see below), whose sum is σ = 180886721904. Its totient is φ = 17227306816.

The previous prime is 64602400609. The next prime is 64602400727. The reversal of 64602400620 is 2600420646.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 538353279 + ... + 538353398.

It is an arithmetic number, because the mean of its divisors is an integer number (7536946746).

Almost surely, 2^64602400620 is an apocalyptic number.

64602400620 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

64602400620 is an abundant number, since it is smaller than the sum of its proper divisors (116284321284).

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

64602400620 is a wasteful number, since it uses less digits than its factorization.

64602400620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1076706689 (or 1076706687 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 30.

The spelling of 64602400620 in words is "sixty-four billion, six hundred two million, four hundred thousand, six hundred twenty".