8617222540 has 12 divisors (see below), whose sum is σ = 18096167376. Its totient is φ = 3446889008.

The previous prime is 8617222529. The next prime is 8617222543. The reversal of 8617222540 is 452227168.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 8617222540.

It is not an unprimeable number, because it can be changed into a prime (8617222543) 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, 215430544 + ... + 215430583.

It is an arithmetic number, because the mean of its divisors is an integer number (1508013948).

Almost surely, 2^8617222540 is an apocalyptic number.

It is an amenable number.

8617222540 is an abundant number, since it is smaller than the sum of its proper divisors (9478944836).

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

8617222540 is a wasteful number, since it uses less digits than its factorization.

8617222540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 430861136 (or 430861134 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 37.

The square root of 8617222540 is about 92828.9962242402. The cubic root of 8617222540 is about 2050.1663588969.

The spelling of 8617222540 in words is "eight billion, six hundred seventeen million, two hundred twenty-two thousand, five hundred forty".