64505604 has 24 divisors (see below), whose sum is σ = 151977280. Its totient is φ = 21292704.

The previous prime is 64505603. The next prime is 64505621. The reversal of 64505604 is 40650546.

It is not an unprimeable number, because it can be changed into a prime (64505603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24859 + ... + 27330.

Almost surely, 2^64505604 is an apocalyptic number.

It is an amenable number.

64505604 is an abundant number, since it is smaller than the sum of its proper divisors (87471676).

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

64505604 is a wasteful number, since it uses less digits than its factorization.

64505604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52299 (or 52297 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 30.

The square root of 64505604 is about 8031.5380843273. The cubic root of 64505604 is about 401.0505799553.

The spelling of 64505604 in words is "sixty-four million, five hundred five thousand, six hundred four".