7664663 has 8 divisors (see below), whose sum is σ = 7965216. Its totient is φ = 7369600.

The previous prime is 7664653. The next prime is 7664669. The reversal of 7664663 is 3664667.

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 7664663 - 2⁸ = 7664407 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 (7664669) 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 7 ways as a sum of consecutive naturals, for example, 1595 + ... + 4227.

It is an arithmetic number, because the mean of its divisors is an integer number (995652).

Almost surely, 2^7664663 is an apocalyptic number.

7664663 is a deficient number, since it is larger than the sum of its proper divisors (300553).

7664663 is a wasteful number, since it uses less digits than its factorization.

7664663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2745.

The product of its digits is 108864, while the sum is 38.

The square root of 7664663 is about 2768.5127776480. The cubic root of 7664663 is about 197.1655440680.

The spelling of 7664663 in words is "seven million, six hundred sixty-four thousand, six hundred sixty-three".