8765485640 has 32 divisors (see below), whose sum is σ = 19725180480. Its totient is φ = 3505689792.

The previous prime is 8765485609. The next prime is 8765485649. The reversal of 8765485640 is 465845678.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (8765485649) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 403127 + ... + 424313.

It is an arithmetic number, because the mean of its divisors is an integer number (616411890).

Almost surely, 2^8765485640 is an apocalyptic number.

It is an amenable number.

8765485640 is an abundant number, since it is smaller than the sum of its proper divisors (10959694840).

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

8765485640 is a wasteful number, since it uses less digits than its factorization.

8765485640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31541 (or 31537 counting only the distinct ones).

The product of its (nonzero) digits is 6451200, while the sum is 53.

The square root of 8765485640 is about 93624.1723060877. The cubic root of 8765485640 is about 2061.8575666233.

The spelling of 8765485640 in words is "eight billion, seven hundred sixty-five million, four hundred eighty-five thousand, six hundred forty".