8636740420 has 72 divisors (see below), whose sum is σ = 22783908672. Its totient is φ = 2691965760.

The previous prime is 8636740369. The next prime is 8636740457. The reversal of 8636740420 is 240476368.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 237982 + ... + 271861.

It is an arithmetic number, because the mean of its divisors is an integer number (316443176).

Almost surely, 2^8636740420 is an apocalyptic number.

It is an amenable number.

8636740420 is an abundant number, since it is smaller than the sum of its proper divisors (14147168252).

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

8636740420 is a wasteful number, since it uses less digits than its factorization.

8636740420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 509881 (or 509868 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 40.

The square root of 8636740420 is about 92934.0649062549. The cubic root of 8636740420 is about 2051.7130571010.

The spelling of 8636740420 in words is "eight billion, six hundred thirty-six million, seven hundred forty thousand, four hundred twenty".