648584430 has 64 divisors (see below), whose sum is σ = 1685311488. Its totient is φ = 158797440.

The previous prime is 648584423. The next prime is 648584491. The reversal of 648584430 is 34485846.

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, 70137 + ... + 78843.

It is an arithmetic number, because the mean of its divisors is an integer number (26332992).

Almost surely, 2^648584430 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 648584430, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (842655744).

648584430 is an abundant number, since it is smaller than the sum of its proper divisors (1036727058).

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

648584430 is a wasteful number, since it uses less digits than its factorization.

648584430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8921.

The product of its (nonzero) digits is 368640, while the sum is 42.

The square root of 648584430 is about 25467.3208249317. The cubic root of 648584430 is about 865.6098164566.

The spelling of 648584430 in words is "six hundred forty-eight million, five hundred eighty-four thousand, four hundred thirty".