7981975 has 6 divisors (see below), whose sum is σ = 9897680. Its totient is φ = 6385560.

The previous prime is 7981949. The next prime is 7981999. The reversal of 7981975 is 5791897.

It is not a de Polignac number, because 7981975 - 2⁷ = 7981847 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 159615 + ... + 159664.

Almost surely, 2^7981975 is an apocalyptic number.

7981975 is a deficient number, since it is larger than the sum of its proper divisors (1915705).

7981975 is a wasteful number, since it uses less digits than its factorization.

7981975 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 319289 (or 319284 counting only the distinct ones).

The product of its digits is 158760, while the sum is 46.

The square root of 7981975 is about 2825.2389279493. The cubic root of 7981975 is about 199.8496787125.

The spelling of 7981975 in words is "seven million, nine hundred eighty-one thousand, nine hundred seventy-five".