648315555 has 64 divisors (see below), whose sum is σ = 1104814080. Its totient is φ = 324172800.

The previous prime is 648315529. The next prime is 648315581. The reversal of 648315555 is 555513846.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (648315529) and next prime (648315581).

It is not a de Polignac number, because 648315555 - 2⁸ = 648315299 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2409961 + ... + 2410229.

It is an arithmetic number, because the mean of its divisors is an integer number (17262720).

Almost surely, 2^648315555 is an apocalyptic number.

648315555 is a deficient number, since it is larger than the sum of its proper divisors (456498525).

648315555 is a wasteful number, since it uses less digits than its factorization.

648315555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 452.

The product of its digits is 360000, while the sum is 42.

The square root of 648315555 is about 25462.0414538976. The cubic root of 648315555 is about 865.4901851501.

The spelling of 648315555 in words is "six hundred forty-eight million, three hundred fifteen thousand, five hundred fifty-five".