868772898 has 64 divisors (see below), whose sum is σ = 2237552640. Its totient is φ = 244717200.

The previous prime is 868772893. The next prime is 868772909. The reversal of 868772898 is 898277868.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is not an unprimeable number, because it can be changed into a prime (868772893) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10653 + ... + 43023.

It is an arithmetic number, because the mean of its divisors is an integer number (34961760).

Almost surely, 2^868772898 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 868772898, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1118776320).

868772898 is an abundant number, since it is smaller than the sum of its proper divisors (1368779742).

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

868772898 is a wasteful number, since it uses less digits than its factorization.

868772898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32460 (or 32454 counting only the distinct ones).

The product of its digits is 21676032, while the sum is 63.

The square root of 868772898 is about 29474.9537404217. The cubic root of 868772898 is about 954.1912317883.

The spelling of 868772898 in words is "eight hundred sixty-eight million, seven hundred seventy-two thousand, eight hundred ninety-eight".