897865830 has 32 divisors (see below), whose sum is σ = 2394309600. Its totient is φ = 239430816.

The previous prime is 897865819. The next prime is 897865849. The reversal of 897865830 is 38568798.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 1662445 + ... + 1662984.

It is an arithmetic number, because the mean of its divisors is an integer number (74822175).

Almost surely, 2^897865830 is an apocalyptic number.

897865830 is an abundant number, since it is smaller than the sum of its proper divisors (1496443770).

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

897865830 is a wasteful number, since it uses less digits than its factorization.

897865830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3325445 (or 3325439 counting only the distinct ones).

The product of its (nonzero) digits is 2903040, while the sum is 54.

The square root of 897865830 is about 29964.4093884729. The cubic root of 897865830 is about 964.7256255940.

The spelling of 897865830 in words is "eight hundred ninety-seven million, eight hundred sixty-five thousand, eight hundred thirty".