648868352 has 40 divisors (see below), whose sum is σ = 1414342512. Its totient is φ = 294937600.

The previous prime is 648868333. The next prime is 648868369. The reversal of 648868352 is 253868846.

It is a self number, because there is not a number n which added to its sum of digits gives 648868352.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51974 + ... + 63237.

Almost surely, 2^648868352 is an apocalyptic number.

It is an amenable number.

648868352 is an abundant number, since it is smaller than the sum of its proper divisors (765474160).

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

648868352 is a wasteful number, since it uses less digits than its factorization.

648868352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115240 (or 115224 counting only the distinct ones).

The product of its digits is 2211840, while the sum is 50.

The square root of 648868352 is about 25472.8944566573. The cubic root of 648868352 is about 865.7361067825.

The spelling of 648868352 in words is "six hundred forty-eight million, eight hundred sixty-eight thousand, three hundred fifty-two".