642604000 has 48 divisors (see below), whose sum is σ = 1578887856. Its totient is φ = 257040000.

The previous prime is 642603989. The next prime is 642604009. The reversal of 642604000 is 406246.

642604000 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 (642604009) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 76326 + ... + 84325.

It is an arithmetic number, because the mean of its divisors is an integer number (32893497).

Almost surely, 2^642604000 is an apocalyptic number.

It is an amenable number.

642604000 is an abundant number, since it is smaller than the sum of its proper divisors (936283856).

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

642604000 is a wasteful number, since it uses less digits than its factorization.

642604000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160676 (or 160658 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 642604000 is about 25349.6351058551. The cubic root of 642604000 is about 862.9410752465.

The spelling of 642604000 in words is "six hundred forty-two million, six hundred four thousand".