8536281664 has 21 divisors (see below), whose sum is σ = 16940650777. Its totient is φ = 4267771264.

The previous prime is 8536281647. The next prime is 8536281667. The reversal of 8536281664 is 4661826358.

It is a happy number.

The square root of 8536281664 is 92392.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 8243187264 + 293094400 = 90792^2 + 17120^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8536281667) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 733362 + ... + 744910.

Almost surely, 2^8536281664 is an apocalyptic number.

8536281664 is the 92392-nd square number.

It is an amenable number.

8536281664 is a deficient number, since it is larger than the sum of its proper divisors (8404369113).

8536281664 is an frugal number, since it uses more digits than its factorization.

8536281664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23110 (or 11551 counting only the distinct ones).

The product of its digits is 1658880, while the sum is 49.

The cubic root of 8536281664 is about 2043.7271398666.

Multiplying 8536281664 by its sum of digits (49), we get a square (418277801536 = 646744²).

The spelling of 8536281664 in words is "eight billion, five hundred thirty-six million, two hundred eighty-one thousand, six hundred sixty-four".