648424712 has 32 divisors (see below), whose sum is σ = 1316007000. Its totient is φ = 297744384.

The previous prime is 648424709. The next prime is 648424813. The reversal of 648424712 is 217424846.

It can be written as a sum of positive squares in 4 ways, for example, as 646481476 + 1943236 = 25426^2 + 1394^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4664 + ... + 36312.

Almost surely, 2^648424712 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 648424712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (658003500).

648424712 is an abundant number, since it is smaller than the sum of its proper divisors (667582288).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

648424712 is a wasteful number, since it uses less digits than its factorization.

648424712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31865 (or 31861 counting only the distinct ones).

The product of its digits is 86016, while the sum is 38.

The square root of 648424712 is about 25464.1848877988. The cubic root of 648424712 is about 865.5387566673.

The spelling of 648424712 in words is "six hundred forty-eight million, four hundred twenty-four thousand, seven hundred twelve".