897961 has 4 divisors (see below), whose sum is σ = 900432. Its totient is φ = 895492.

The previous prime is 897947. The next prime is 897971. The reversal of 897961 is 169798.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 897961 - 2¹¹ = 895913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (897931) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 571 + ... + 1456.

It is an arithmetic number, because the mean of its divisors is an integer number (225108).

2⁸⁹⁷⁹⁶¹ is an apocalyptic number.

It is an amenable number.

897961 is a deficient number, since it is larger than the sum of its proper divisors (2471).

897961 is a wasteful number, since it uses less digits than its factorization.

897961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2470.

The product of its digits is 27216, while the sum is 40.

The square root of 897961 is about 947.6080413335. The cubic root of 897961 is about 96.4759710009.

It can be divided in two parts, 8 and 97961, that added together give a square (97969 = 313²).

The spelling of 897961 in words is "eight hundred ninety-seven thousand, nine hundred sixty-one".