898656864 has 144 divisors (see below), whose sum is σ = 2782766448. Its totient is φ = 253145088.

The previous prime is 898656859. The next prime is 898656881. The reversal of 898656864 is 468656898.

It is a junction number, because it is equal to n+sod(n) for n = 898656798 and 898656807.

It is a congruent 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, 342084 + ... + 344700.

It is an arithmetic number, because the mean of its divisors is an integer number (19324767).

Almost surely, 2^898656864 is an apocalyptic number.

898656864 is a gapful number since it is divisible by the number (84) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 898656864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1391383224).

898656864 is an abundant number, since it is smaller than the sum of its proper divisors (1884109584).

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

898656864 is a wasteful number, since it uses less digits than its factorization.

898656864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2717 (or 2702 counting only the distinct ones).

The product of its digits is 19906560, while the sum is 60.

The square root of 898656864 is about 29977.6060418440. The cubic root of 898656864 is about 965.0088552795.

The spelling of 898656864 in words is "eight hundred ninety-eight million, six hundred fifty-six thousand, eight hundred sixty-four".