7975881 has 16 divisors (see below), whose sum is σ = 11995200. Its totient is φ = 5236704.

The previous prime is 7975861. The next prime is 7975883. The reversal of 7975881 is 1885797.

It is not a de Polignac number, because 7975881 - 2⁶ = 7975817 is a prime.

It is a super-2 number, since 2×7975881² = 127229355452322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (7975883) 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, 396 + ... + 4013.

It is an arithmetic number, because the mean of its divisors is an integer number (749700).

Almost surely, 2^7975881 is an apocalyptic number.

It is an amenable number.

7975881 is a deficient number, since it is larger than the sum of its proper divisors (4019319).

7975881 is a wasteful number, since it uses less digits than its factorization.

7975881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4485 (or 4479 counting only the distinct ones).

The product of its digits is 141120, while the sum is 45.

The square root of 7975881 is about 2824.1602291655. The cubic root of 7975881 is about 199.7988060061.

The spelling of 7975881 in words is "seven million, nine hundred seventy-five thousand, eight hundred eighty-one".