64310020 has 24 divisors (see below), whose sum is σ = 135886464. Its totient is φ = 25564896.

The previous prime is 64310011. The next prime is 64310063. The reversal of 64310020 is 2001346.

It is a junction number, because it is equal to n+sod(n) for n = 64309976 and 64310003.

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, 6604 + ... + 13123.

It is an arithmetic number, because the mean of its divisors is an integer number (5661936).

Almost surely, 2^64310020 is an apocalyptic number.

It is an amenable number.

64310020 is an abundant number, since it is smaller than the sum of its proper divisors (71576444).

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

64310020 is a wasteful number, since it uses less digits than its factorization.

64310020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19899 (or 19897 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 64310020 is about 8019.3528417198. The cubic root of 64310020 is about 400.6448349112.

Adding to 64310020 its reverse (2001346), we get a palindrome (66311366).

The spelling of 64310020 in words is "sixty-four million, three hundred ten thousand, twenty".