7999616 has 16 divisors (see below), whose sum is σ = 15936990. Its totient is φ = 3999744.

The previous prime is 7999613. The next prime is 7999637. The reversal of 7999616 is 6169997.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 7182400 + 817216 = 2680^2 + 904^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is a super-2 number, since 2×7999616² = 127987712294912, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (7999613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31121 + ... + 31376.

Almost surely, 2^7999616 is an apocalyptic number.

It is an amenable number.

7999616 is a deficient number, since it is larger than the sum of its proper divisors (7937374).

7999616 is an equidigital number, since it uses as much as digits as its factorization.

7999616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62511 (or 62499 counting only the distinct ones).

The product of its digits is 183708, while the sum is 47.

The square root of 7999616 is about 2828.3592416806. The cubic root of 7999616 is about 199.9967999488.

The spelling of 7999616 in words is "seven million, nine hundred ninety-nine thousand, six hundred sixteen".