872998767522 has 90 divisors (see below), whose sum is σ = 2275754610987. Its totient is φ = 249404434776.

The previous prime is 872998767491. The next prime is 872998767539. The reversal of 872998767522 is 225767899278.

872998767522 is a `hidden beast` number, since 8 + 7 + 2 + 9 + 98 + 7 + 6 + 7 + 522 = 666.

It can be written as a sum of positive squares in only one way, i.e., 436499383761 + 436499383761 = 660681^2 + 660681^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=660681.

It is an unprimeable number.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 83240563 + ... + 83251049.

Almost surely, 2^872998767522 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 872998767522

872998767522 is an abundant number, since it is smaller than the sum of its proper divisors (1402755843465).

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

872998767522 is an frugal number, since it uses more digits than its factorization.

872998767522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21002 (or 10499 counting only the distinct ones).

The product of its digits is 426746880, while the sum is 72.

Multiplying 872998767522 by its sum of digits (72), we get a square (62855911261584 = 7928172²).

The spelling of 872998767522 in words is "eight hundred seventy-two billion, nine hundred ninety-eight million, seven hundred sixty-seven thousand, five hundred twenty-two".