7971536 has 20 divisors (see below), whose sum is σ = 15570432. Its totient is φ = 3953376.

The previous prime is 7971503. The next prime is 7971563. The reversal of 7971536 is 6351797.

It is a self number, because there is not a number n which added to its sum of digits gives 7971536.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 71 + ... + 3993.

Almost surely, 2^7971536 is an apocalyptic number.

It is an amenable number.

7971536 is a deficient number, since it is larger than the sum of its proper divisors (7598896).

7971536 is a wasteful number, since it uses less digits than its factorization.

7971536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4058 (or 4052 counting only the distinct ones).

The product of its digits is 39690, while the sum is 38.

The square root of 7971536 is about 2823.3908691501. The cubic root of 7971536 is about 199.7625181234.

The spelling of 7971536 in words is "seven million, nine hundred seventy-one thousand, five hundred thirty-six".