7687664605 has 16 divisors (see below), whose sum is σ = 9794511360. Its totient is φ = 5772563712.

The previous prime is 7687664599. The next prime is 7687664617. The reversal of 7687664605 is 5064667867.

It is a cyclic number.

It is not a de Polignac number, because 7687664605 - 2⁵ = 7687664573 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 (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 92025 + ... + 154414.

It is an arithmetic number, because the mean of its divisors is an integer number (612156960).

Almost surely, 2^7687664605 is an apocalyptic number.

It is an amenable number.

7687664605 is a deficient number, since it is larger than the sum of its proper divisors (2106846755).

7687664605 is a wasteful number, since it uses less digits than its factorization.

7687664605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 246828.

The product of its (nonzero) digits is 10160640, while the sum is 55.

The square root of 7687664605 is about 87679.3282649907. The cubic root of 7687664605 is about 1973.6257794874.

The spelling of 7687664605 in words is "seven billion, six hundred eighty-seven million, six hundred sixty-four thousand, six hundred five".