648901600 has 36 divisors (see below), whose sum is σ = 1584132984. Its totient is φ = 259560320.

The previous prime is 648901573. The next prime is 648901601. The reversal of 648901600 is 6109846.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (648901601) 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, 404764 + ... + 406363.

It is an arithmetic number, because the mean of its divisors is an integer number (44003694).

Almost surely, 2^648901600 is an apocalyptic number.

It is an amenable number.

648901600 is an abundant number, since it is smaller than the sum of its proper divisors (935231384).

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

648901600 is a wasteful number, since it uses less digits than its factorization.

648901600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 811147 (or 811134 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 648901600 is about 25473.5470635717. The cubic root of 648901600 is about 865.7508932963.

The spelling of 648901600 in words is "six hundred forty-eight million, nine hundred one thousand, six hundred".