648882464 has 12 divisors (see below), whose sum is σ = 1277487414. Its totient is φ = 324441216.

The previous prime is 648882449. The next prime is 648882467. The reversal of 648882464 is 464288846.

It can be written as a sum of positive squares in only one way, i.e., 609694864 + 39187600 = 24692^2 + 6260^2 .

It is a super-2 number, since 2×648882464² = 842096904173422592, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (648882467) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10138757 + ... + 10138820.

Almost surely, 2^648882464 is an apocalyptic number.

It is an amenable number.

648882464 is a deficient number, since it is larger than the sum of its proper divisors (628604950).

648882464 is a wasteful number, since it uses less digits than its factorization.

648882464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20277587 (or 20277579 counting only the distinct ones).

The product of its digits is 2359296, while the sum is 50.

The square root of 648882464 is about 25473.1714554745. The cubic root of 648882464 is about 865.7423829295.

The spelling of 648882464 in words is "six hundred forty-eight million, eight hundred eighty-two thousand, four hundred sixty-four".