897307520 has 64 divisors (see below), whose sum is σ = 2150763840. Its totient is φ = 357980160.

The previous prime is 897307513. The next prime is 897307553. The reversal of 897307520 is 25703798.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 274214 + ... + 277466.

It is an arithmetic number, because the mean of its divisors is an integer number (33605685).

Almost surely, 2^897307520 is an apocalyptic number.

897307520 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 897307520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1075381920).

897307520 is an abundant number, since it is smaller than the sum of its proper divisors (1253456320).

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

897307520 is a wasteful number, since it uses less digits than its factorization.

897307520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3703 (or 3691 counting only the distinct ones).

The product of its (nonzero) digits is 105840, while the sum is 41.

The square root of 897307520 is about 29955.0917207743. The cubic root of 897307520 is about 964.5256225701.

The spelling of 897307520 in words is "eight hundred ninety-seven million, three hundred seven thousand, five hundred twenty".