7881995 has 16 divisors (see below), whose sum is σ = 10402560. Its totient is φ = 5685600.

The previous prime is 7881983. The next prime is 7882003. The reversal of 7881995 is 5991887.

It is a happy number.

It is not a de Polignac number, because 7881995 - 2⁸ = 7881739 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7130 + ... + 8160.

It is an arithmetic number, because the mean of its divisors is an integer number (650160).

Almost surely, 2^7881995 is an apocalyptic number.

7881995 is a deficient number, since it is larger than the sum of its proper divisors (2520565).

7881995 is a wasteful number, since it uses less digits than its factorization.

7881995 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1186.

The product of its digits is 181440, while the sum is 47.

The square root of 7881995 is about 2807.4890916974. The cubic root of 7881995 is about 199.0117498512.

The spelling of 7881995 in words is "seven million, eight hundred eighty-one thousand, nine hundred ninety-five".