648934568 has 16 divisors (see below), whose sum is σ = 1218232500. Its totient is φ = 324072576.

The previous prime is 648934549. The next prime is 648934571. The reversal of 648934568 is 865439846.

It can be written as a sum of positive squares in 2 ways, for example, as 612958564 + 35976004 = 24758^2 + 5998^2 .

It is a super-2 number, since 2×648934568² = 842232147090693248, 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, 42293 + ... + 55556.

Almost surely, 2^648934568 is an apocalyptic number.

It is an amenable number.

648934568 is a deficient number, since it is larger than the sum of its proper divisors (569297932).

648934568 is a wasteful number, since it uses less digits than its factorization.

648934568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98684 (or 98680 counting only the distinct ones).

The product of its digits is 4976640, while the sum is 53.

The square root of 648934568 is about 25474.1941580102. The cubic root of 648934568 is about 865.7655547859.

The spelling of 648934568 in words is "six hundred forty-eight million, nine hundred thirty-four thousand, five hundred sixty-eight".