7991698 has 16 divisors (see below), whose sum is σ = 14083776. Its totient is φ = 3353040.

The previous prime is 7991657. The next prime is 7991701. The reversal of 7991698 is 8961997.

It is an unprimeable number.

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, 13686 + ... + 14257.

It is an arithmetic number, because the mean of its divisors is an integer number (880236).

Almost surely, 2^7991698 is an apocalyptic number.

7991698 is a deficient number, since it is larger than the sum of its proper divisors (6092078).

7991698 is a wasteful number, since it uses less digits than its factorization.

7991698 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27969.

The product of its digits is 244944, while the sum is 49.

The square root of 7991698 is about 2826.9591436736. The cubic root of 7991698 is about 199.9307927212.

Subtracting 7991698 from its reverse (8961997), we obtain a cube (970299 = 99³).

The spelling of 7991698 in words is "seven million, nine hundred ninety-one thousand, six hundred ninety-eight".