897132816 has 60 divisors (see below), whose sum is σ = 2538972540. Its totient is φ = 295680000.

The previous prime is 897132787. The next prime is 897132853. The reversal of 897132816 is 618231798.

It can be written as a sum of positive squares in 2 ways, for example, as 484880400 + 412252416 = 22020^2 + 20304^2 .

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 11 ways as a sum of consecutive naturals, for example, 22185 + ... + 47816.

It is an arithmetic number, because the mean of its divisors is an integer number (42316209).

Almost surely, 2^897132816 is an apocalyptic number.

It is an amenable number.

897132816 is an abundant number, since it is smaller than the sum of its proper divisors (1641839724).

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

897132816 is a wasteful number, since it uses less digits than its factorization.

897132816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70104 (or 70095 counting only the distinct ones).

The product of its digits is 145152, while the sum is 45.

The square root of 897132816 is about 29952.1754802552. The cubic root of 897132816 is about 964.4630214299.

It can be divided in two parts, 89713 and 2816, that added together give a palindrome (92529).

The spelling of 897132816 in words is "eight hundred ninety-seven million, one hundred thirty-two thousand, eight hundred sixteen".