7971316 has 12 divisors (see below), whose sum is σ = 14009380. Its totient is φ = 3968640.

The previous prime is 7971311. The next prime is 7971323. The reversal of 7971316 is 6131797.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 6739216 + 1232100 = 2596^2 + 1110^2 .

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7971311) 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 3 ways as a sum of consecutive naturals, for example, 3171 + ... + 5098.

Almost surely, 2^7971316 is an apocalyptic number.

It is an amenable number.

7971316 is a deficient number, since it is larger than the sum of its proper divisors (6038064).

7971316 is a wasteful number, since it uses less digits than its factorization.

7971316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8514 (or 8512 counting only the distinct ones).

The product of its digits is 7938, while the sum is 34.

The square root of 7971316 is about 2823.3519086363. The cubic root of 7971316 is about 199.7606804116.

The spelling of 7971316 in words is "seven million, nine hundred seventy-one thousand, three hundred sixteen".