8736644652 has 12 divisors (see below), whose sum is σ = 20385504216. Its totient is φ = 2912214880.

The previous prime is 8736644639. The next prime is 8736644659. The reversal of 8736644652 is 2564466378.

It is a happy number.

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

It is a super-2 number, since 2×8736644652² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 8736644595 and 8736644604.

It is not an unprimeable number, because it can be changed into a prime (8736644659) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 364026849 + ... + 364026872.

It is an arithmetic number, because the mean of its divisors is an integer number (1698792018).

Almost surely, 2^8736644652 is an apocalyptic number.

It is an amenable number.

8736644652 is an abundant number, since it is smaller than the sum of its proper divisors (11648859564).

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

8736644652 is a wasteful number, since it uses less digits than its factorization.

8736644652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 728053728 (or 728053726 counting only the distinct ones).

The product of its digits is 5806080, while the sum is 51.

The square root of 8736644652 is about 93470.0200706087. The cubic root of 8736644652 is about 2059.5937122519.

The spelling of 8736644652 in words is "eight billion, seven hundred thirty-six million, six hundred forty-four thousand, six hundred fifty-two".