7879666 has 8 divisors (see below), whose sum is σ = 11854044. Its totient is φ = 3928320.

The previous prime is 7879637. The next prime is 7879679. The reversal of 7879666 is 6669787.

It can be written as a sum of positive squares in 2 ways, for example, as 6869641 + 1010025 = 2621^2 + 1005^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4875 + ... + 6286.

Almost surely, 2^7879666 is an apocalyptic number.

7879666 is a deficient number, since it is larger than the sum of its proper divisors (3974378).

7879666 is a wasteful number, since it uses less digits than its factorization.

7879666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11516.

The product of its digits is 762048, while the sum is 49.

The square root of 7879666 is about 2807.0742776065. The cubic root of 7879666 is about 198.9921463530.

The spelling of 7879666 in words is "seven million, eight hundred seventy-nine thousand, six hundred sixty-six".