897818 has 8 divisors (see below), whose sum is σ = 1379700. Its totient is φ = 437920.

The previous prime is 897817. The next prime is 897829. The reversal of 897818 is 818798.

It can be written as a sum of positive squares in 2 ways, for example, as 644809 + 253009 = 803^2 + 503^2 .

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

It is a super-2 number, since 2×897818² = 1612154322248, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is not an unprimeable number, because it can be changed into a prime (897817) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5393 + ... + 5556.

2⁸⁹⁷⁸¹⁸ is an apocalyptic number.

897818 is a deficient number, since it is larger than the sum of its proper divisors (481882).

897818 is a wasteful number, since it uses less digits than its factorization.

897818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10992.

The product of its digits is 32256, while the sum is 41.

The square root of 897818 is about 947.5325851917. The cubic root of 897818 is about 96.4708494732.

It can be divided in two parts, 8978 and 18, that multiplied together give a square (161604 = 402²).

The spelling of 897818 in words is "eight hundred ninety-seven thousand, eight hundred eighteen".