897777 has 16 divisors (see below), whose sum is σ = 1364160. Its totient is φ = 583200.

The previous prime is 897751. The next prime is 897779. The reversal of 897777 is 777798.

It is not a de Polignac number, because 897777 - 2⁷ = 897649 is a prime.

It is not an unprimeable number, because it can be changed into a prime (897779) 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, 702 + ... + 1512.

It is an arithmetic number, because the mean of its divisors is an integer number (85260).

2⁸⁹⁷⁷⁷⁷ is an apocalyptic number.

It is an amenable number.

897777 is a deficient number, since it is larger than the sum of its proper divisors (466383).

897777 is a wasteful number, since it uses less digits than its factorization.

897777 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 861 (or 855 counting only the distinct ones).

The product of its digits is 172872, while the sum is 45.

The square root of 897777 is about 947.5109498048. The cubic root of 897777 is about 96.4693809629.

The spelling of 897777 in words is "eight hundred ninety-seven thousand, seven hundred seventy-seven".