648754392 has 128 divisors (see below), whose sum is σ = 2005920000. Its totient is φ = 171901440.

The previous prime is 648754349. The next prime is 648754433. The reversal of 648754392 is 293457846.

648754392 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×648754392² = 841764522278579328, which contains 22 as substring.

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, 60234 + ... + 70182.

It is an arithmetic number, because the mean of its divisors is an integer number (15671250).

Almost surely, 2^648754392 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 648754392, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1002960000).

648754392 is an abundant number, since it is smaller than the sum of its proper divisors (1357165608).

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

648754392 is a wasteful number, since it uses less digits than its factorization.

648754392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10001 (or 9997 counting only the distinct ones).

The product of its digits is 1451520, while the sum is 48.

The square root of 648754392 is about 25470.6574709017. The cubic root of 648754392 is about 865.6854210706.

The spelling of 648754392 in words is "six hundred forty-eight million, seven hundred fifty-four thousand, three hundred ninety-two".