7666997 has 8 divisors (see below), whose sum is σ = 8284416. Its totient is φ = 7053552.

The previous prime is 7666993. The next prime is 7666999. The reversal of 7666997 is 7996667.

It is a happy number.

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 7666997 - 2² = 7666993 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7666993) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3968 + ... + 5574.

It is an arithmetic number, because the mean of its divisors is an integer number (1035552).

Almost surely, 2^7666997 is an apocalyptic number.

It is an amenable number.

7666997 is a deficient number, since it is larger than the sum of its proper divisors (617419).

7666997 is a wasteful number, since it uses less digits than its factorization.

7666997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1987.

The product of its digits is 857304, while the sum is 50.

The square root of 7666997 is about 2768.9342715204. The cubic root of 7666997 is about 197.1855552838.

The spelling of 7666997 in words is "seven million, six hundred sixty-six thousand, nine hundred ninety-seven".