648424880 has 40 divisors (see below), whose sum is σ = 1596272832. Its totient is φ = 244112384.

The previous prime is 648424879. The next prime is 648424883. The reversal of 648424880 is 88424846.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (648424883) 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, 237032 + ... + 239751.

Almost surely, 2^648424880 is an apocalyptic number.

It is an amenable number.

648424880 is an abundant number, since it is smaller than the sum of its proper divisors (947847952).

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

648424880 is a wasteful number, since it uses less digits than its factorization.

648424880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 476813 (or 476807 counting only the distinct ones).

The product of its (nonzero) digits is 393216, while the sum is 44.

The square root of 648424880 is about 25464.1881865494. The cubic root of 648424880 is about 865.5388314179.

The spelling of 648424880 in words is "six hundred forty-eight million, four hundred twenty-four thousand, eight hundred eighty".