648279015 has 16 divisors (see below), whose sum is σ = 1038242400. Its totient is φ = 345416832.

The previous prime is 648279011. The next prime is 648279019. The reversal of 648279015 is 510972846.

It is an interprime number because it is at equal distance from previous prime (648279011) and next prime (648279019).

It is not a de Polignac number, because 648279015 - 2² = 648279011 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (648279011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4180 + ... + 36249.

It is an arithmetic number, because the mean of its divisors is an integer number (64890150).

Almost surely, 2^648279015 is an apocalyptic number.

648279015 is a deficient number, since it is larger than the sum of its proper divisors (389963385).

648279015 is a wasteful number, since it uses less digits than its factorization.

648279015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41506.

The product of its (nonzero) digits is 120960, while the sum is 42.

The square root of 648279015 is about 25461.3239050918. The cubic root of 648279015 is about 865.4739247528.

The spelling of 648279015 in words is "six hundred forty-eight million, two hundred seventy-nine thousand, fifteen".