7890165 has 24 divisors (see below), whose sum is σ = 13747968. Its totient is φ = 4186080.

The previous prime is 7890161. The next prime is 7890191. The reversal of 7890165 is 5610987.

It is not a de Polignac number, because 7890165 - 2² = 7890161 is a prime.

It is an alternating number because its digits alternate between odd and even.

7890165 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7890161) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 11872 + ... + 12518.

It is an arithmetic number, because the mean of its divisors is an integer number (572832).

Almost surely, 2^7890165 is an apocalyptic number.

It is an amenable number.

7890165 is a deficient number, since it is larger than the sum of its proper divisors (5857803).

7890165 is a wasteful number, since it uses less digits than its factorization.

7890165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 929 (or 926 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 36.

The square root of 7890165 is about 2808.9437516618. The cubic root of 7890165 is about 199.0804872940.

The spelling of 7890165 in words is "seven million, eight hundred ninety thousand, one hundred sixty-five".