897855 has 32 divisors (see below), whose sum is σ = 1741824. Its totient is φ = 385536.

The previous prime is 897847. The next prime is 897877. The reversal of 897855 is 558798.

It is not a de Polignac number, because 897855 - 2³ = 897847 is a prime.

It is a super-2 number, since 2×897855² = 1612287202050, which contains 22 as substring.

It is a plaindrome in base 13.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1534 + ... + 2036.

It is an arithmetic number, because the mean of its divisors is an integer number (54432).

2⁸⁹⁷⁸⁵⁵ is an apocalyptic number.

897855 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

897855 is a deficient number, since it is larger than the sum of its proper divisors (843969).

897855 is a wasteful number, since it uses less digits than its factorization.

897855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 535.

The product of its digits is 100800, while the sum is 42.

The square root of 897855 is about 947.5521093850. The cubic root of 897855 is about 96.4721746759.

The spelling of 897855 in words is "eight hundred ninety-seven thousand, eight hundred fifty-five".