7990655 has 4 divisors (see below), whose sum is σ = 9588792. Its totient is φ = 6392520.

The previous prime is 7990649. The next prime is 7990667. The reversal of 7990655 is 5560997.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 7990655 - 2⁴ = 7990639 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 799061 + ... + 799070.

It is an arithmetic number, because the mean of its divisors is an integer number (2397198).

Almost surely, 2^7990655 is an apocalyptic number.

7990655 is a deficient number, since it is larger than the sum of its proper divisors (1598137).

7990655 is a wasteful number, since it uses less digits than its factorization.

7990655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1598136.

The product of its (nonzero) digits is 85050, while the sum is 41.

The square root of 7990655 is about 2826.7746638174. The cubic root of 7990655 is about 199.9220946577.

The spelling of 7990655 in words is "seven million, nine hundred ninety thousand, six hundred fifty-five".