897213864 has 64 divisors (see below), whose sum is σ = 2296728000. Its totient is φ = 291985920.

The previous prime is 897213859. The next prime is 897213869. The reversal of 897213864 is 468312798.

It is an interprime number because it is at equal distance from previous prime (897213859) and next prime (897213869).

It is not an unprimeable number, because it can be changed into a prime (897213869) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 201292 + ... + 205700.

It is an arithmetic number, because the mean of its divisors is an integer number (35886375).

Almost surely, 2^897213864 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 897213864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1148364000).

897213864 is an abundant number, since it is smaller than the sum of its proper divisors (1399514136).

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

897213864 is a wasteful number, since it uses less digits than its factorization.

897213864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4618 (or 4614 counting only the distinct ones).

The product of its digits is 580608, while the sum is 48.

The square root of 897213864 is about 29953.5284065167. The cubic root of 897213864 is about 964.4920641178.

The spelling of 897213864 in words is "eight hundred ninety-seven million, two hundred thirteen thousand, eight hundred sixty-four".