7993665 has 24 divisors (see below), whose sum is σ = 14233128. Its totient is φ = 4147200.

The previous prime is 7993663. The next prime is 7993679. The reversal of 7993665 is 5663997.

It can be written as a sum of positive squares in 4 ways, for example, as 2461761 + 5531904 = 1569^2 + 2352^2 .

It is not a de Polignac number, because 7993665 - 2¹ = 7993663 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 7993665.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7993663) 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 23 ways as a sum of consecutive naturals, for example, 736 + ... + 4065.

It is an arithmetic number, because the mean of its divisors is an integer number (593047).

Almost surely, 2^7993665 is an apocalyptic number.

It is an amenable number.

7993665 is a deficient number, since it is larger than the sum of its proper divisors (6239463).

7993665 is a wasteful number, since it uses less digits than its factorization.

7993665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4849 (or 4846 counting only the distinct ones).

The product of its digits is 306180, while the sum is 45.

The square root of 7993665 is about 2827.3070225923. The cubic root of 7993665 is about 199.9471943924.

The spelling of 7993665 in words is "seven million, nine hundred ninety-three thousand, six hundred sixty-five".