648340626 has 32 divisors (see below), whose sum is σ = 1353397248. Its totient is φ = 206860160.

The previous prime is 648340613. The next prime is 648340631. The reversal of 648340626 is 626043846.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11826 + ... + 37901.

It is an arithmetic number, because the mean of its divisors is an integer number (42293664).

Almost surely, 2^648340626 is an apocalyptic number.

648340626 is an abundant number, since it is smaller than the sum of its proper divisors (705056622).

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

648340626 is a wasteful number, since it uses less digits than its factorization.

648340626 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49826.

The product of its (nonzero) digits is 165888, while the sum is 39.

The square root of 648340626 is about 25462.5337702280. The cubic root of 648340626 is about 865.5013414584.

The spelling of 648340626 in words is "six hundred forty-eight million, three hundred forty thousand, six hundred twenty-six".