897908736 has 68 divisors (see below), whose sum is σ = 2394929312. Its totient is φ = 299237376.

The previous prime is 897908723. The next prime is 897908747. The reversal of 897908736 is 637809798.

It is a Smith number, since the sum of its digits (57) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 194325 + ... + 198891.

Almost surely, 2^897908736 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 897908736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1197464656).

897908736 is an abundant number, since it is smaller than the sum of its proper divisors (1497020576).

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

897908736 is an frugal number, since it uses more digits than its factorization.

897908736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4602 (or 4572 counting only the distinct ones).

The product of its (nonzero) digits is 4572288, while the sum is 57.

The square root of 897908736 is about 29965.1253292890. The cubic root of 897908736 is about 964.7409923511.

The spelling of 897908736 in words is "eight hundred ninety-seven million, nine hundred eight thousand, seven hundred thirty-six".