897997 has 8 divisors (see below), whose sum is σ = 954560. Its totient is φ = 842400.

The previous prime is 897983. The next prime is 898013. The reversal of 897997 is 799798.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-897997 is a prime.

It is a super-2 number, since 2×897997² = 1612797224018, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 897997.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (897907) by changing a digit.

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, 2713 + ... + 3025.

It is an arithmetic number, because the mean of its divisors is an integer number (119320).

2⁸⁹⁷⁹⁹⁷ is an apocalyptic number.

It is an amenable number.

897997 is a deficient number, since it is larger than the sum of its proper divisors (56563).

897997 is a wasteful number, since it uses less digits than its factorization.

897997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 483.

The product of its digits is 285768, while the sum is 49.

The square root of 897997 is about 947.6270363387. The cubic root of 897997 is about 96.4772602508.

The spelling of 897997 in words is "eight hundred ninety-seven thousand, nine hundred ninety-seven".