7981516 has 12 divisors (see below), whose sum is σ = 14008288. Its totient is φ = 3979152.

The previous prime is 7981513. The next prime is 7981537. The reversal of 7981516 is 6151897.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (7981513) 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, 1251 + ... + 4186.

Almost surely, 2^7981516 is an apocalyptic number.

It is an amenable number.

7981516 is a deficient number, since it is larger than the sum of its proper divisors (6026772).

7981516 is a wasteful number, since it uses less digits than its factorization.

7981516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5808 (or 5806 counting only the distinct ones).

The product of its digits is 15120, while the sum is 37.

The square root of 7981516 is about 2825.1576947137. The cubic root of 7981516 is about 199.8458478828.

The spelling of 7981516 in words is "seven million, nine hundred eighty-one thousand, five hundred sixteen".