897811880 has 32 divisors (see below), whose sum is σ = 2308659840. Its totient is φ = 307821120.

The previous prime is 897811823. The next prime is 897811897. The reversal of 897811880 is 88118798.

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 7 ways as a sum of consecutive naturals, for example, 1602956 + ... + 1603515.

It is an arithmetic number, because the mean of its divisors is an integer number (72145620).

Almost surely, 2^897811880 is an apocalyptic number.

It is an amenable number.

897811880 is an abundant number, since it is smaller than the sum of its proper divisors (1410847960).

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

897811880 is a wasteful number, since it uses less digits than its factorization.

897811880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3206489 (or 3206485 counting only the distinct ones).

The product of its (nonzero) digits is 258048, while the sum is 50.

The square root of 897811880 is about 29963.5091402860. The cubic root of 897811880 is about 964.7063027404.

The spelling of 897811880 in words is "eight hundred ninety-seven million, eight hundred eleven thousand, eight hundred eighty".