648556323 has 32 divisors (see below), whose sum is σ = 915840000. Its totient is φ = 407442816.

The previous prime is 648556303. The next prime is 648556333. The reversal of 648556323 is 323655846.

It is not a de Polignac number, because 648556323 - 2⁵ = 648556291 is a prime.

It is not an unprimeable number, because it can be changed into a prime (648556303) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2045761 + ... + 2046077.

It is an arithmetic number, because the mean of its divisors is an integer number (28620000).

Almost surely, 2^648556323 is an apocalyptic number.

648556323 is a deficient number, since it is larger than the sum of its proper divisors (267283677).

648556323 is a wasteful number, since it uses less digits than its factorization.

648556323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 691.

The product of its digits is 518400, while the sum is 42.

The square root of 648556323 is about 25466.7689941225. The cubic root of 648556323 is about 865.5973122780.

The spelling of 648556323 in words is "six hundred forty-eight million, five hundred fifty-six thousand, three hundred twenty-three".