6648015 has 32 divisors (see below), whose sum is σ = 11886336. Its totient is φ = 3144960.

The previous prime is 6648007. The next prime is 6648023. The reversal of 6648015 is 5108466.

It is an interprime number because it is at equal distance from previous prime (6648007) and next prime (6648023).

It is not a de Polignac number, because 6648015 - 2³ = 6648007 is a prime.

It is a super-2 number, since 2×6648015² = 88392206880450, which contains 22 as substring.

It is a congruent number.

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 31 ways as a sum of consecutive naturals, for example, 6627 + ... + 7563.

It is an arithmetic number, because the mean of its divisors is an integer number (371448).

Almost surely, 2^6648015 is an apocalyptic number.

6648015 is a deficient number, since it is larger than the sum of its proper divisors (5238321).

6648015 is a wasteful number, since it uses less digits than its factorization.

6648015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 999.

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 6648015 is about 2578.3744879284. The cubic root of 6648015 is about 188.0315229320.

The spelling of 6648015 in words is "six million, six hundred forty-eight thousand, fifteen".