648972324 has 576 divisors, whose sum is σ = 2465648640. Its totient is φ = 143700480.

The previous prime is 648972319. The next prime is 648972361. The reversal of 648972324 is 423279846.

It is a self number, because there is not a number n which added to its sum of digits gives 648972324.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 22378342 + ... + 22378370.

It is an arithmetic number, because the mean of its divisors is an integer number (4280640).

Almost surely, 2^648972324 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 648972324, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1232824320).

648972324 is an abundant number, since it is smaller than the sum of its proper divisors (1816676316).

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

648972324 is a wasteful number, since it uses less digits than its factorization.

648972324 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102 (or 88 counting only the distinct ones).

The product of its digits is 580608, while the sum is 45.

The square root of 648972324 is about 25474.9352109088. The cubic root of 648972324 is about 865.7823449791.

The spelling of 648972324 in words is "six hundred forty-eight million, nine hundred seventy-two thousand, three hundred twenty-four".