64788580 has 12 divisors (see below), whose sum is σ = 136056060. Its totient is φ = 25915424.

The previous prime is 64788553. The next prime is 64788599. The reversal of 64788580 is 8588746.

64788580 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 2 ways, for example, as 42302016 + 22486564 = 6504^2 + 4742^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 64788580.

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 3 ways as a sum of consecutive naturals, for example, 1619695 + ... + 1619734.

It is an arithmetic number, because the mean of its divisors is an integer number (11338005).

Almost surely, 2^64788580 is an apocalyptic number.

It is an amenable number.

64788580 is an abundant number, since it is smaller than the sum of its proper divisors (71267480).

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

64788580 is a wasteful number, since it uses less digits than its factorization.

64788580 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3239438 (or 3239436 counting only the distinct ones).

The product of its (nonzero) digits is 430080, while the sum is 46.

The square root of 64788580 is about 8049.1353572915. The cubic root of 64788580 is about 401.6361732177.

The spelling of 64788580 in words is "sixty-four million, seven hundred eighty-eight thousand, five hundred eighty".