897615089522 has 6 divisors (see below), whose sum is σ = 1346424644079. Its totient is φ = 448806874830.

The previous prime is 897615089519. The next prime is 897615089537. The reversal of 897615089522 is 225980516798.

It can be written as a sum of positive squares in only one way, i.e., 448807544761 + 448807544761 = 669931^2 + 669931^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=669931.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 1004897 + ... + 1674827.

Almost surely, 2^897615089522 is an apocalyptic number.

897615089522 is a deficient number, since it is larger than the sum of its proper divisors (448809554557).

897615089522 is an frugal number, since it uses more digits than its factorization.

897615089522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1339864 (or 669933 counting only the distinct ones).

The product of its (nonzero) digits is 21772800, while the sum is 62.

The spelling of 897615089522 in words is "eight hundred ninety-seven billion, six hundred fifteen million, eighty-nine thousand, five hundred twenty-two".