64500580 has 12 divisors (see below), whose sum is σ = 135451260. Its totient is φ = 25800224.

The previous prime is 64500539. The next prime is 64500613. The reversal of 64500580 is 8500546.

64500580 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 8340544 + 56160036 = 2888^2 + 7494^2 .

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, 1612495 + ... + 1612534.

It is an arithmetic number, because the mean of its divisors is an integer number (11287605).

Almost surely, 2^64500580 is an apocalyptic number.

It is an amenable number.

64500580 is an abundant number, since it is smaller than the sum of its proper divisors (70950680).

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

64500580 is a wasteful number, since it uses less digits than its factorization.

64500580 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3225038 (or 3225036 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 28.

The square root of 64500580 is about 8031.2253112461. The cubic root of 64500580 is about 401.0401677829.

The spelling of 64500580 in words is "sixty-four million, five hundred thousand, five hundred eighty".