897917072 has 40 divisors (see below), whose sum is σ = 1904279160. Its totient is φ = 407623680.

The previous prime is 897917071. The next prime is 897917089. The reversal of 897917072 is 270719798.

It can be written as a sum of positive squares in 4 ways, for example, as 16777216 + 881139856 = 4096^2 + 29684^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 897917072.

It is not an unprimeable number, because it can be changed into a prime (897917071) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22697 + ... + 48072.

It is an arithmetic number, because the mean of its divisors is an integer number (47606979).

Almost surely, 2^897917072 is an apocalyptic number.

It is an amenable number.

897917072 is an abundant number, since it is smaller than the sum of its proper divisors (1006362088).

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

897917072 is a wasteful number, since it uses less digits than its factorization.

897917072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70851 (or 70845 counting only the distinct ones).

The product of its (nonzero) digits is 444528, while the sum is 50.

The square root of 897917072 is about 29965.2644239960. The cubic root of 897917072 is about 964.7439778275.

The spelling of 897917072 in words is "eight hundred ninety-seven million, nine hundred seventeen thousand, seventy-two".