7958865 has 16 divisors (see below), whose sum is σ = 12811968. Its totient is φ = 4218816.

The previous prime is 7958861. The next prime is 7958869. The reversal of 7958865 is 5688597.

It is an interprime number because it is at equal distance from previous prime (7958861) and next prime (7958869).

It is not a de Polignac number, because 7958865 - 2² = 7958861 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (7958861) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1062 + ... + 4128.

It is an arithmetic number, because the mean of its divisors is an integer number (800748).

Almost surely, 2^7958865 is an apocalyptic number.

It is an amenable number.

7958865 is a deficient number, since it is larger than the sum of its proper divisors (4853103).

7958865 is a wasteful number, since it uses less digits than its factorization.

7958865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3248.

The product of its digits is 604800, while the sum is 48.

The square root of 7958865 is about 2821.1460437205. The cubic root of 7958865 is about 199.6566191186.

The spelling of 7958865 in words is "seven million, nine hundred fifty-eight thousand, eight hundred sixty-five".