897408 has 96 divisors (see below), whose sum is σ = 2784600. Its totient is φ = 276480.

The previous prime is 897401. The next prime is 897433. The reversal of 897408 is 804798.

It is a tau number, because it is divible by the number of its divisors (96).

It is a super-2 number, since 2×897408² = 1610682236928, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (897401) by changing a digit.

897408 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21868 + ... + 21908.

2⁸⁹⁷⁴⁰⁸ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 897408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1392300).

897408 is an abundant number, since it is smaller than the sum of its proper divisors (1887192).

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

897408 is a wasteful number, since it uses less digits than its factorization.

897408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80 (or 65 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 36.

The square root of 897408 is about 947.3162090875. The cubic root of 897408 is about 96.4561623575.

The spelling of 897408 in words is "eight hundred ninety-seven thousand, four hundred eight".