7668725 has 6 divisors (see below), whose sum is σ = 9509250. Its totient is φ = 6134960.

The previous prime is 7668709. The next prime is 7668757. The reversal of 7668725 is 5278667.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 56644 + 7612081 = 238^2 + 2759^2 .

It is not a de Polignac number, because 7668725 - 2⁴ = 7668709 is a prime.

It is a congruent number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 153350 + ... + 153399.

It is an arithmetic number, because the mean of its divisors is an integer number (1584875).

Almost surely, 2^7668725 is an apocalyptic number.

It is an amenable number.

7668725 is a deficient number, since it is larger than the sum of its proper divisors (1840525).

7668725 is a wasteful number, since it uses less digits than its factorization.

7668725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 306759 (or 306754 counting only the distinct ones).

The product of its digits is 141120, while the sum is 41.

The square root of 7668725 is about 2769.2462873497. The cubic root of 7668725 is about 197.2003681692.

The spelling of 7668725 in words is "seven million, six hundred sixty-eight thousand, seven hundred twenty-five".