648603960 has 32 divisors (see below), whose sum is σ = 1945812240. Its totient is φ = 172961024.

The previous prime is 648603953. The next prime is 648604001. The reversal of 648603960 is 69306846.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2702397 + ... + 2702636.

Almost surely, 2^648603960 is an apocalyptic number.

648603960 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

648603960 is an abundant number, since it is smaller than the sum of its proper divisors (1297208280).

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

648603960 is a wasteful number, since it uses less digits than its factorization.

648603960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5405047 (or 5405043 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 42.

The square root of 648603960 is about 25467.7042546045. The cubic root of 648603960 is about 865.6185047061.

The spelling of 648603960 in words is "six hundred forty-eight million, six hundred three thousand, nine hundred sixty".