648340596 has 18 divisors (see below), whose sum is σ = 1638861042. Its totient is φ = 216113520.

The previous prime is 648340507. The next prime is 648340601. The reversal of 648340596 is 695043846.

It can be written as a sum of positive squares in only one way, i.e., 469155600 + 179184996 = 21660^2 + 13386^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 9004695 + ... + 9004766.

Almost surely, 2^648340596 is an apocalyptic number.

It is an amenable number.

648340596 is an abundant number, since it is smaller than the sum of its proper divisors (990520446).

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

648340596 is a wasteful number, since it uses less digits than its factorization.

648340596 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18009471 (or 18009466 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 45.

The square root of 648340596 is about 25462.5331811271. The cubic root of 648340596 is about 865.5013281090.

The spelling of 648340596 in words is "six hundred forty-eight million, three hundred forty thousand, five hundred ninety-six".