648583156 has 12 divisors (see below), whose sum is σ = 1222329892. Its totient is φ = 299346048.

The previous prime is 648583153. The next prime is 648583163. The reversal of 648583156 is 651385846.

It can be written as a sum of positive squares in 2 ways, for example, as 157251600 + 491331556 = 12540^2 + 22166^2 .

It is a super-2 number, since 2×648583156² = 841320220493840672, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (648583153) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6236325 + ... + 6236428.

Almost surely, 2^648583156 is an apocalyptic number.

It is an amenable number.

648583156 is a deficient number, since it is larger than the sum of its proper divisors (573746736).

648583156 is a wasteful number, since it uses less digits than its factorization.

648583156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12472770 (or 12472768 counting only the distinct ones).

The product of its digits is 691200, while the sum is 46.

The square root of 648583156 is about 25467.2958124729. The cubic root of 648583156 is about 865.6092496902.

The spelling of 648583156 in words is "six hundred forty-eight million, five hundred eighty-three thousand, one hundred fifty-six".