897276891 has 16 divisors (see below), whose sum is σ = 1367878400. Its totient is φ = 512504928.

The previous prime is 897276883. The next prime is 897276901. The reversal of 897276891 is 198672798.

It is not a de Polignac number, because 897276891 - 2³ = 897276883 is a prime.

It is not an unprimeable number, because it can be changed into a prime (897266891) 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, 47805 + ... + 63873.

It is an arithmetic number, because the mean of its divisors is an integer number (85492400).

Almost surely, 2^897276891 is an apocalyptic number.

897276891 is a deficient number, since it is larger than the sum of its proper divisors (470601509).

897276891 is a wasteful number, since it uses less digits than its factorization.

897276891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18738.

The product of its digits is 3048192, while the sum is 57.

The square root of 897276891 is about 29954.5804677682. The cubic root of 897276891 is about 964.5146479634.

The spelling of 897276891 in words is "eight hundred ninety-seven million, two hundred seventy-six thousand, eight hundred ninety-one".