7991606 has 12 divisors (see below), whose sum is σ = 13944708. Its totient is φ = 3424932.

The previous prime is 7991591. The next prime is 7991623. The reversal of 7991606 is 6061997.

It is a self number, because there is not a number n which added to its sum of digits gives 7991606.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 40676 + ... + 40871.

It is an arithmetic number, because the mean of its divisors is an integer number (1162059).

Almost surely, 2^7991606 is an apocalyptic number.

7991606 is a deficient number, since it is larger than the sum of its proper divisors (5953102).

7991606 is a wasteful number, since it uses less digits than its factorization.

7991606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81563 (or 81556 counting only the distinct ones).

The product of its (nonzero) digits is 20412, while the sum is 38.

The square root of 7991606 is about 2826.9428717256. The cubic root of 7991606 is about 199.9300255207.

The spelling of 7991606 in words is "seven million, nine hundred ninety-one thousand, six hundred six".