648147232 has 24 divisors (see below), whose sum is σ = 1276922556. Its totient is φ = 323849472.

The previous prime is 648147121. The next prime is 648147233. The reversal of 648147232 is 232741846.

It can be written as a sum of positive squares in 2 ways, for example, as 591656976 + 56490256 = 24324^2 + 7516^2 .

It is a junction number, because it is equal to n+sod(n) for n = 648147191 and 648147200.

It is not an unprimeable number, because it can be changed into a prime (648147233) 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, 46198 + ... + 58570.

Almost surely, 2^648147232 is an apocalyptic number.

It is an amenable number.

648147232 is a deficient number, since it is larger than the sum of its proper divisors (628775324).

648147232 is a wasteful number, since it uses less digits than its factorization.

648147232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14020 (or 14012 counting only the distinct ones).

The product of its digits is 64512, while the sum is 37.

The square root of 648147232 is about 25458.7358680670. The cubic root of 648147232 is about 865.4152758908.

The spelling of 648147232 in words is "six hundred forty-eight million, one hundred forty-seven thousand, two hundred thirty-two".