7664315636 has 6 divisors (see below), whose sum is σ = 13412552370. Its totient is φ = 3832157816.

The previous prime is 7664315621. The next prime is 7664315641. The reversal of 7664315636 is 6365134667.

It can be written as a sum of positive squares in only one way, i.e., 6797013136 + 867302500 = 82444^2 + 29450^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 958039451 + ... + 958039458.

It is an arithmetic number, because the mean of its divisors is an integer number (2235425395).

Almost surely, 2^7664315636 is an apocalyptic number.

It is an amenable number.

7664315636 is a deficient number, since it is larger than the sum of its proper divisors (5748236734).

7664315636 is a wasteful number, since it uses less digits than its factorization.

7664315636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1916078913 (or 1916078911 counting only the distinct ones).

The product of its digits is 1632960, while the sum is 47.

The square root of 7664315636 is about 87546.0772165150. The cubic root of 7664315636 is about 1971.6256549621.

The spelling of 7664315636 in words is "seven billion, six hundred sixty-four million, three hundred fifteen thousand, six hundred thirty-six".