897277812 has 48 divisors (see below), whose sum is σ = 2212761600. Its totient is φ = 282204000.

The previous prime is 897277811. The next prime is 897277837. The reversal of 897277812 is 218772798.

It is a happy number.

It is a hoax number, since the sum of its digits (51) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (897277811) 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, 49389 + ... + 65067.

It is an arithmetic number, because the mean of its divisors is an integer number (46099200).

Almost surely, 2^897277812 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 897277812, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1106380800).

897277812 is an abundant number, since it is smaller than the sum of its proper divisors (1315483788).

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

897277812 is a wasteful number, since it uses less digits than its factorization.

897277812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15956 (or 15954 counting only the distinct ones).

The product of its digits is 790272, while the sum is 51.

The square root of 897277812 is about 29954.5958410392. The cubic root of 897277812 is about 964.5149779684.

The spelling of 897277812 in words is "eight hundred ninety-seven million, two hundred seventy-seven thousand, eight hundred twelve".