64416020 has 12 divisors (see below), whose sum is σ = 135273684. Its totient is φ = 25766400.

The previous prime is 64416019. The next prime is 64416059. The reversal of 64416020 is 2061446.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 40170244 + 24245776 = 6338^2 + 4924^2 .

It is a hoax number, since the sum of its digits (23) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1610381 + ... + 1610420.

It is an arithmetic number, because the mean of its divisors is an integer number (11272807).

Almost surely, 2^64416020 is an apocalyptic number.

It is an amenable number.

64416020 is an abundant number, since it is smaller than the sum of its proper divisors (70857664).

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

64416020 is a wasteful number, since it uses less digits than its factorization.

64416020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3220810 (or 3220808 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 64416020 is about 8025.9591327143. The cubic root of 64416020 is about 400.8648371276.

Adding to 64416020 its reverse (2061446), we get a palindrome (66477466).

The spelling of 64416020 in words is "sixty-four million, four hundred sixteen thousand, twenty".