7691994564 has 12 divisors (see below), whose sum is σ = 17947987344. Its totient is φ = 2563998184.

The previous prime is 7691994553. The next prime is 7691994587. The reversal of 7691994564 is 4654991967.

It is a tau number, because it is divible by the number of its divisors (12).

It is a Smith number, since the sum of its digits (60) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 7691994498 and 7691994507.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 320499762 + ... + 320499785.

It is an arithmetic number, because the mean of its divisors is an integer number (1495665612).

Almost surely, 2^7691994564 is an apocalyptic number.

It is an amenable number.

7691994564 is an abundant number, since it is smaller than the sum of its proper divisors (10255992780).

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

7691994564 is a wasteful number, since it uses less digits than its factorization.

7691994564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 640999554 (or 640999552 counting only the distinct ones).

The product of its digits is 14696640, while the sum is 60.

The square root of 7691994564 is about 87704.0168065294. The cubic root of 7691994564 is about 1973.9962480771.

The spelling of 7691994564 in words is "seven billion, six hundred ninety-one million, nine hundred ninety-four thousand, five hundred sixty-four".