897520 has 40 divisors (see below), whose sum is σ = 2249856. Its totient is φ = 331008.

The previous prime is 897517. The next prime is 897527. The reversal of 897520 is 25798.

897520 = 84² + 85² + ... + 148².

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (897527) 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 7 ways as a sum of consecutive naturals, for example, 609 + ... + 1471.

2⁸⁹⁷⁵²⁰ is an apocalyptic number.

897520 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 897520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1124928).

897520 is an abundant number, since it is smaller than the sum of its proper divisors (1352336).

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

897520 is a wasteful number, since it uses less digits than its factorization.

897520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 889 (or 883 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 31.

The square root of 897520 is about 947.3753216123. The cubic root of 897520 is about 96.4601748917.

The spelling of 897520 in words is "eight hundred ninety-seven thousand, five hundred twenty".