897977 has 8 divisors (see below), whose sum is σ = 940800. Its totient is φ = 856080.

The previous prime is 897971. The next prime is 897983. The reversal of 897977 is 779798.

It is an interprime number because it is at equal distance from previous prime (897971) and next prime (897983).

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

It is a cyclic number.

It is not a de Polignac number, because 897977 - 2¹⁰ = 896953 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 897977.

It is not an unprimeable number, because it can be changed into a prime (897971) 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, 2399 + ... + 2747.

It is an arithmetic number, because the mean of its divisors is an integer number (117600).

2⁸⁹⁷⁹⁷⁷ is an apocalyptic number.

It is an amenable number.

897977 is a deficient number, since it is larger than the sum of its proper divisors (42823).

897977 is a wasteful number, since it uses less digits than its factorization.

897977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 463.

The product of its digits is 222264, while the sum is 47.

The square root of 897977 is about 947.6164836051. The cubic root of 897977 is about 96.4765440051.

The spelling of 897977 in words is "eight hundred ninety-seven thousand, nine hundred seventy-seven".