7998679 has 8 divisors (see below), whose sum is σ = 8671040. Its totient is φ = 7334496.

The previous prime is 7998673. The next prime is 7998691. The reversal of 7998679 is 9768997.

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

It is not a de Polignac number, because 7998679 - 2⁹ = 7998167 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 (7998673) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 82 + ... + 4000.

It is an arithmetic number, because the mean of its divisors is an integer number (1083880).

Almost surely, 2^7998679 is an apocalyptic number.

7998679 is a deficient number, since it is larger than the sum of its proper divisors (672361).

7998679 is a wasteful number, since it uses less digits than its factorization.

7998679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4089.

The product of its digits is 1714608, while the sum is 55.

The square root of 7998679 is about 2828.1935930908. The cubic root of 7998679 is about 199.9889910607.

The spelling of 7998679 in words is "seven million, nine hundred ninety-eight thousand, six hundred seventy-nine".