664240600 has 24 divisors (see below), whose sum is σ = 1544359860. Its totient is φ = 265696160.

The previous prime is 664240561. The next prime is 664240601. The reversal of 664240600 is 6042466.

664240600 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (664240601) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1660402 + ... + 1660801.

Almost surely, 2^664240600 is an apocalyptic number.

It is an amenable number.

664240600 is an abundant number, since it is smaller than the sum of its proper divisors (880119260).

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

664240600 is a wasteful number, since it uses less digits than its factorization.

664240600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3321219 (or 3321210 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 28.

The square root of 664240600 is about 25772.8655760278. The cubic root of 664240600 is about 872.5194944783.

The spelling of 664240600 in words is "six hundred sixty-four million, two hundred forty thousand, six hundred".