8644997694 has 16 divisors (see below), whose sum is σ = 17692088832. Its totient is φ = 2814650328.

The previous prime is 8644997659. The next prime is 8644997707. The reversal of 8644997694 is 4967994468.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16753614 + ... + 16754129.

It is an arithmetic number, because the mean of its divisors is an integer number (1105755552).

Almost surely, 2^8644997694 is an apocalyptic number.

8644997694 is an abundant number, since it is smaller than the sum of its proper divisors (9047091138).

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

8644997694 is a wasteful number, since it uses less digits than its factorization.

8644997694 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33507791.

The product of its digits is 94058496, while the sum is 66.

The square root of 8644997694 is about 92978.4797359045. The cubic root of 8644997694 is about 2052.3667049610.

The spelling of 8644997694 in words is "eight billion, six hundred forty-four million, nine hundred ninety-seven thousand, six hundred ninety-four".