897223712 has 108 divisors (see below), whose sum is σ = 2259062190. Its totient is φ = 349493760.

The previous prime is 897223651. The next prime is 897223741. The reversal of 897223712 is 217322798.

It can be written as a sum of positive squares in only one way, i.e., 892575376 + 4648336 = 29876^2 + 2156^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 897223712.

It is an unprimeable number.

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 17 ways as a sum of consecutive naturals, for example, 187364 + ... + 192092.

Almost surely, 2^897223712 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 897223712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1129531095).

897223712 is an abundant number, since it is smaller than the sum of its proper divisors (1361838478).

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

897223712 is a wasteful number, since it uses less digits than its factorization.

897223712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4775 (or 4749 counting only the distinct ones).

The product of its digits is 84672, while the sum is 41.

The square root of 897223712 is about 29953.6927940446. The cubic root of 897223712 is about 964.4955929246.

The spelling of 897223712 in words is "eight hundred ninety-seven million, two hundred twenty-three thousand, seven hundred twelve".