64467520 has 56 divisors (see below), whose sum is σ = 165332664. Its totient is φ = 23801856.

The previous prime is 64467509. The next prime is 64467563. The reversal of 64467520 is 2576446.

64467520 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 11235904 + 53231616 = 3352^2 + 7296^2 .

It is a super-2 number, since 2×64467520² = 8312122269900800, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3589 + ... + 11908.

It is an arithmetic number, because the mean of its divisors is an integer number (2952369).

Almost surely, 2^64467520 is an apocalyptic number.

It is an amenable number.

64467520 is an abundant number, since it is smaller than the sum of its proper divisors (100865144).

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

64467520 is a wasteful number, since it uses less digits than its factorization.

64467520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15527 (or 15517 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 34.

The square root of 64467520 is about 8029.1668309981. The cubic root of 64467520 is about 400.9716378885.

The spelling of 64467520 in words is "sixty-four million, four hundred sixty-seven thousand, five hundred twenty".