7641636164 has 24 divisors (see below), whose sum is σ = 13726709976. Its totient is φ = 3720960000.

The previous prime is 7641636139. The next prime is 7641636169. The reversal of 7641636164 is 4616361467.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 108784900 + 7532851264 = 10430^2 + 86792^2 .

It is not an unprimeable number, because it can be changed into a prime (7641636169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 130397 + ... + 179684.

It is an arithmetic number, because the mean of its divisors is an integer number (571946249).

Almost surely, 2^7641636164 is an apocalyptic number.

It is an amenable number.

7641636164 is a deficient number, since it is larger than the sum of its proper divisors (6085073812).

7641636164 is a wasteful number, since it uses less digits than its factorization.

7641636164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 310247 (or 310245 counting only the distinct ones).

The product of its digits is 435456, while the sum is 44.

The square root of 7641636164 is about 87416.4524789241. The cubic root of 7641636164 is about 1969.6789881227.

The spelling of 7641636164 in words is "seven billion, six hundred forty-one million, six hundred thirty-six thousand, one hundred sixty-four".