7990506 has 12 divisors (see below), whose sum is σ = 17312802. Its totient is φ = 2663496.

The previous prime is 7990481. The next prime is 7990519. The reversal of 7990506 is 6050997.

It can be written as a sum of positive squares in only one way, i.e., 4223025 + 3767481 = 2055^2 + 1941^2 .

It is a super-2 number, since 2×7990506² = 127696372272072, which contains 22 as substring.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Curzon 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, 221941 + ... + 221976.

Almost surely, 2^7990506 is an apocalyptic number.

7990506 is an abundant number, since it is smaller than the sum of its proper divisors (9322296).

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

7990506 is a wasteful number, since it uses less digits than its factorization.

7990506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 443925 (or 443922 counting only the distinct ones).

The product of its (nonzero) digits is 17010, while the sum is 36.

The square root of 7990506 is about 2826.7483085694. The cubic root of 7990506 is about 199.9208520154.

The spelling of 7990506 in words is "seven million, nine hundred ninety thousand, five hundred six".