7666885 has 8 divisors (see below), whose sum is σ = 9215640. Its totient is φ = 6123264.

The previous prime is 7666859. The next prime is 7666903. The reversal of 7666885 is 5886667.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 2427364 + 5239521 = 1558^2 + 2289^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 7666885 - 2⁵ = 7666853 is a prime.

It is a super-2 number, since 2×7666885² = 117562251206450, which contains 22 as substring.

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3961 + ... + 5569.

It is an arithmetic number, because the mean of its divisors is an integer number (1151955).

Almost surely, 2^7666885 is an apocalyptic number.

It is an amenable number.

7666885 is a deficient number, since it is larger than the sum of its proper divisors (1548755).

7666885 is a wasteful number, since it uses less digits than its factorization.

7666885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2567.

The product of its digits is 483840, while the sum is 46.

The square root of 7666885 is about 2768.9140470589. The cubic root of 7666885 is about 197.1845951126.

The spelling of 7666885 in words is "seven million, six hundred sixty-six thousand, eight hundred eighty-five".