897724 has 24 divisors (see below), whose sum is σ = 1663200. Its totient is φ = 423360.

The previous prime is 897709. The next prime is 897727. The reversal of 897724 is 427798.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (897727) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8182 + ... + 8290.

It is an arithmetic number, because the mean of its divisors is an integer number (69300).

2⁸⁹⁷⁷²⁴ is an apocalyptic number.

It is an amenable number.

897724 is a deficient number, since it is larger than the sum of its proper divisors (765476).

897724 is a wasteful number, since it uses less digits than its factorization.

897724 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213 (or 211 counting only the distinct ones).

The product of its digits is 28224, while the sum is 37.

The square root of 897724 is about 947.4829813775. The cubic root of 897724 is about 96.4674825784.

The spelling of 897724 in words is "eight hundred ninety-seven thousand, seven hundred twenty-four".