897858 has 32 divisors (see below), whose sum is σ = 2150400. Its totient is φ = 276048.

The previous prime is 897847. The next prime is 897877. The reversal of 897858 is 858798.

897858 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×897858² = 1612297976328, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 63 + ... + 1341.

It is an arithmetic number, because the mean of its divisors is an integer number (67200).

2⁸⁹⁷⁸⁵⁸ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 897858, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1075200).

897858 is an abundant number, since it is smaller than the sum of its proper divisors (1252542).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

897858 is a wasteful number, since it uses less digits than its factorization.

897858 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1303 (or 1297 counting only the distinct ones).

The product of its digits is 161280, while the sum is 45.

The square root of 897858 is about 947.5536924101. The cubic root of 897858 is about 96.4722821232.

Subtracting from 897858 its reverse (858798), we obtain a triangular number (39060 = T₂₇₉).

The spelling of 897858 in words is "eight hundred ninety-seven thousand, eight hundred fifty-eight".