897778 has 12 divisors (see below), whose sum is σ = 1566702. Its totient is φ = 384720.

The previous prime is 897751. The next prime is 897779. The reversal of 897778 is 877798.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 815409 + 82369 = 903^2 + 287^2 .

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 5 ways as a sum of consecutive naturals, for example, 4483 + ... + 4678.

2⁸⁹⁷⁷⁷⁸ is an apocalyptic number.

897778 is a deficient number, since it is larger than the sum of its proper divisors (668924).

897778 is a wasteful number, since it uses less digits than its factorization.

897778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9177 (or 9170 counting only the distinct ones).

The product of its digits is 197568, while the sum is 46.

The square root of 897778 is about 947.5114775030. The cubic root of 897778 is about 96.4694167807.

The spelling of 897778 in words is "eight hundred ninety-seven thousand, seven hundred seventy-eight".