648924424 has 16 divisors (see below), whose sum is σ = 1217231100. Its totient is φ = 324329472.

The previous prime is 648924403. The next prime is 648924443. The reversal of 648924424 is 424429846.

It can be written as a sum of positive squares in 2 ways, for example, as 596824900 + 52099524 = 24430^2 + 7218^2 .

It is a super-2 number, since 2×648924424² = 842205816127463552, which contains 22 as substring.

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, 5992 + ... + 36520.

Almost surely, 2^648924424 is an apocalyptic number.

It is an amenable number.

648924424 is a deficient number, since it is larger than the sum of its proper divisors (568306676).

648924424 is a wasteful number, since it uses less digits than its factorization.

648924424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33192 (or 33188 counting only the distinct ones).

The product of its digits is 442368, while the sum is 43.

The square root of 648924424 is about 25473.9950537798. The cubic root of 648924424 is about 865.7610436112.

The spelling of 648924424 in words is "six hundred forty-eight million, nine hundred twenty-four thousand, four hundred twenty-four".