7899690 has 16 divisors (see below), whose sum is σ = 18959328. Its totient is φ = 2106576.

The previous prime is 7899677. The next prime is 7899701. The reversal of 7899690 is 969987.

It is a happy number.

It is a super-2 number, since 2×7899690² = 124810204192200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 131632 + ... + 131691.

It is an arithmetic number, because the mean of its divisors is an integer number (1184958).

Almost surely, 2^7899690 is an apocalyptic number.

7899690 is an abundant number, since it is smaller than the sum of its proper divisors (11059638).

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

7899690 is a wasteful number, since it uses less digits than its factorization.

7899690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263333.

The product of its (nonzero) digits is 244944, while the sum is 48.

The square root of 7899690 is about 2810.6387174448. The cubic root of 7899690 is about 199.1605650070.

The spelling of 7899690 in words is "seven million, eight hundred ninety-nine thousand, six hundred ninety".