7997650 has 36 divisors (see below), whose sum is σ = 15914718. Its totient is φ = 2979840.

The previous prime is 7997623. The next prime is 7997663. The reversal of 7997650 is 567997.

It can be written as a sum of positive squares in 9 ways, for example, as 927369 + 7070281 = 963^2 + 2659^2 .

It is a junction number, because it is equal to n+sod(n) for n = 7997597 and 7997606.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 82402 + ... + 82498.

Almost surely, 2^7997650 is an apocalyptic number.

7997650 is a deficient number, since it is larger than the sum of its proper divisors (7917068).

7997650 is a wasteful number, since it uses less digits than its factorization.

7997650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223 (or 121 counting only the distinct ones).

The product of its (nonzero) digits is 119070, while the sum is 43.

The square root of 7997650 is about 2828.0116690000. The cubic root of 7997650 is about 199.9804147488.

The spelling of 7997650 in words is "seven million, nine hundred ninety-seven thousand, six hundred fifty".