6648973 has 4 divisors (see below), whose sum is σ = 6863488. Its totient is φ = 6434460.

The previous prime is 6648883. The next prime is 6648977. The reversal of 6648973 is 3798466.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 6648973 - 2²¹ = 4551821 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6648977) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 107211 + ... + 107272.

It is an arithmetic number, because the mean of its divisors is an integer number (1715872).

Almost surely, 2^6648973 is an apocalyptic number.

It is an amenable number.

6648973 is a deficient number, since it is larger than the sum of its proper divisors (214515).

6648973 is a wasteful number, since it uses less digits than its factorization.

6648973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214514.

The product of its digits is 217728, while the sum is 43.

The square root of 6648973 is about 2578.5602571978. The cubic root of 6648973 is about 188.0405544773.

The spelling of 6648973 in words is "six million, six hundred forty-eight thousand, nine hundred seventy-three".