6648985 has 16 divisors (see below), whose sum is σ = 9165312. Its totient is φ = 4536000.

The previous prime is 6648979. The next prime is 6648991. The reversal of 6648985 is 5898466.

It is an interprime number because it is at equal distance from previous prime (6648979) and next prime (6648991).

It is not a de Polignac number, because 6648985 - 2³ = 6648977 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9135 + ... + 9835.

It is an arithmetic number, because the mean of its divisors is an integer number (572832).

Almost surely, 2^6648985 is an apocalyptic number.

It is an amenable number.

6648985 is a deficient number, since it is larger than the sum of its proper divisors (2516327).

6648985 is a wasteful number, since it uses less digits than its factorization.

6648985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 984.

The product of its digits is 414720, while the sum is 46.

The square root of 6648985 is about 2578.5625840766. The cubic root of 6648985 is about 188.0406676018.

It can be divided in two parts, 66489 and 85, that multiplied together give a palindrome (5651565).

The spelling of 6648985 in words is "six million, six hundred forty-eight thousand, nine hundred eighty-five".