7668931 has 4 divisors (see below), whose sum is σ = 7674472. Its totient is φ = 7663392.

The previous prime is 7668919. The next prime is 7668937. The reversal of 7668931 is 1398667.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7668931 is a prime.

It is a super-2 number, since 2×7668931² = 117625005365522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7668937) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1291 + ... + 4123.

It is an arithmetic number, because the mean of its divisors is an integer number (1918618).

Almost surely, 2^7668931 is an apocalyptic number.

7668931 is a deficient number, since it is larger than the sum of its proper divisors (5541).

7668931 is a wasteful number, since it uses less digits than its factorization.

7668931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5540.

The product of its digits is 54432, while the sum is 40.

The square root of 7668931 is about 2769.2834813359. The cubic root of 7668931 is about 197.2021339087.

The spelling of 7668931 in words is "seven million, six hundred sixty-eight thousand, nine hundred thirty-one".