64322020 has 24 divisors (see below), whose sum is σ = 154373184. Its totient is φ = 22053216.

The previous prime is 64321987. The next prime is 64322057. The reversal of 64322020 is 2022346.

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, 229582 + ... + 229861.

It is an arithmetic number, because the mean of its divisors is an integer number (6432216).

Almost surely, 2^64322020 is an apocalyptic number.

It is an amenable number.

64322020 is an abundant number, since it is smaller than the sum of its proper divisors (90051164).

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

64322020 is a wasteful number, since it uses less digits than its factorization.

64322020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 459459 (or 459457 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 64322020 is about 8020.1009968703. The cubic root of 64322020 is about 400.6697529516.

Adding to 64322020 its reverse (2022346), we get a palindrome (66344366).

The spelling of 64322020 in words is "sixty-four million, three hundred twenty-two thousand, twenty".