897322144 has 24 divisors (see below), whose sum is σ = 1774199700. Its totient is φ = 446731776.

The previous prime is 897322141. The next prime is 897322163. The reversal of 897322144 is 441223798.

It can be written as a sum of positive squares in 2 ways, for example, as 891619600 + 5702544 = 29860^2 + 2388^2 .

It is a super-2 number, since 2×897322144² = 1610374060225513472, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 897322097 and 897322106.

It is not an unprimeable number, because it can be changed into a prime (897322141) 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 3 ways as a sum of consecutive naturals, for example, 52719 + ... + 67630.

Almost surely, 2^897322144 is an apocalyptic number.

It is an amenable number.

897322144 is a deficient number, since it is larger than the sum of its proper divisors (876877556).

897322144 is a wasteful number, since it uses less digits than its factorization.

897322144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120592 (or 120584 counting only the distinct ones).

The product of its digits is 96768, while the sum is 40.

The square root of 897322144 is about 29955.3358185149. The cubic root of 897322144 is about 964.5308623739.

The spelling of 897322144 in words is "eight hundred ninety-seven million, three hundred twenty-two thousand, one hundred forty-four".