7979688 has 32 divisors (see below), whose sum is σ = 22166400. Its totient is φ = 2659824.

The previous prime is 7979687. The next prime is 7979693. The reversal of 7979688 is 8869797.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (7979687) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18256 + ... + 18687.

It is an arithmetic number, because the mean of its divisors is an integer number (692700).

Almost surely, 2^7979688 is an apocalyptic number.

It is an amenable number.

7979688 is an abundant number, since it is smaller than the sum of its proper divisors (14186712).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7979688 is a wasteful number, since it uses less digits than its factorization.

7979688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36958 (or 36948 counting only the distinct ones).

The product of its digits is 1524096, while the sum is 54.

The square root of 7979688 is about 2824.8341544239. The cubic root of 7979688 is about 199.8305898749.

The spelling of 7979688 in words is "seven million, nine hundred seventy-nine thousand, six hundred eighty-eight".