648279632 has 160 divisors (see below), whose sum is σ = 1786385664. Its totient is φ = 219340800.

The previous prime is 648279607. The next prime is 648279647. The reversal of 648279632 is 236972846.

648279632 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 271082 + ... + 273462.

Almost surely, 2^648279632 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 648279632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (893192832).

648279632 is an abundant number, since it is smaller than the sum of its proper divisors (1138106032).

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

648279632 is a wasteful number, since it uses less digits than its factorization.

648279632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2437 (or 2431 counting only the distinct ones).

The product of its digits is 870912, while the sum is 47.

The square root of 648279632 is about 25461.3360215052. The cubic root of 648279632 is about 865.4741993245.

The spelling of 648279632 in words is "six hundred forty-eight million, two hundred seventy-nine thousand, six hundred thirty-two".