6657079 has 12 divisors (see below), whose sum is σ = 7866072. Its totient is φ = 5584800.

The previous prime is 6657073. The next prime is 6657103. The reversal of 6657079 is 9707566.

It is a de Polignac number, because none of the positive numbers 2^k-6657079 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 (6657073) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 69 + ... + 3649.

It is an arithmetic number, because the mean of its divisors is an integer number (655506).

Almost surely, 2^6657079 is an apocalyptic number.

6657079 is a deficient number, since it is larger than the sum of its proper divisors (1208993).

6657079 is a wasteful number, since it uses less digits than its factorization.

6657079 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3618 (or 3605 counting only the distinct ones).

The product of its (nonzero) digits is 79380, while the sum is 40.

The square root of 6657079 is about 2580.1315857917. The cubic root of 6657079 is about 188.1169390924.

It can be divided in two parts, 665 and 7079, that added together give a square (7744 = 88²).

The spelling of 6657079 in words is "six million, six hundred fifty-seven thousand, seventy-nine".