7664879 has 8 divisors (see below), whose sum is σ = 7880400. Its totient is φ = 7451136.

The previous prime is 7664873. The next prime is 7664887. The reversal of 7664879 is 9784667.

It is a happy number.

7664879 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 7664879 - 2⁴ = 7664863 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 (7664873) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16847 + ... + 17295.

It is an arithmetic number, because the mean of its divisors is an integer number (985050).

Almost surely, 2^7664879 is an apocalyptic number.

7664879 is a deficient number, since it is larger than the sum of its proper divisors (215521).

7664879 is a wasteful number, since it uses less digits than its factorization.

7664879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 889.

The product of its digits is 508032, while the sum is 47.

The square root of 7664879 is about 2768.5517874875. The cubic root of 7664879 is about 197.1673961763.

The spelling of 7664879 in words is "seven million, six hundred sixty-four thousand, eight hundred seventy-nine".