7664659806 has 24 divisors (see below), whose sum is σ = 15860306520. Its totient is φ = 2466415392.

The previous prime is 7664659789. The next prime is 7664659811. The reversal of 7664659806 is 6089564667.

It is a happy number.

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 11 ways as a sum of consecutive naturals, for example, 1151520 + ... + 1158156.

It is an arithmetic number, because the mean of its divisors is an integer number (660846105).

Almost surely, 2^7664659806 is an apocalyptic number.

7664659806 is an abundant number, since it is smaller than the sum of its proper divisors (8195646714).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7664659806 is an frugal number, since it uses more digits than its factorization.

7664659806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13308 (or 6671 counting only the distinct ones).

The product of its (nonzero) digits is 13063680, while the sum is 57.

The square root of 7664659806 is about 87548.0428450574. The cubic root of 7664659806 is about 1971.6551668053.

The spelling of 7664659806 in words is "seven billion, six hundred sixty-four million, six hundred fifty-nine thousand, eight hundred six".