897543860 has 24 divisors (see below), whose sum is σ = 1885925160. Its totient is φ = 358811264.

The previous prime is 897543827. The next prime is 897543877. The reversal of 897543860 is 68345798.

It can be written as a sum of positive squares in 4 ways, for example, as 12124324 + 885419536 = 3482^2 + 29756^2 .

It is a junction number, because it is equal to n+sod(n) for n = 897543799 and 897543808.

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, 25586 + ... + 49494.

It is an arithmetic number, because the mean of its divisors is an integer number (78580215).

Almost surely, 2^897543860 is an apocalyptic number.

It is an amenable number.

897543860 is an abundant number, since it is smaller than the sum of its proper divisors (988381300).

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

897543860 is a wasteful number, since it uses less digits than its factorization.

897543860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25795 (or 25793 counting only the distinct ones).

The product of its (nonzero) digits is 1451520, while the sum is 50.

The square root of 897543860 is about 29959.0363663453. The cubic root of 897543860 is about 964.6102966162.

The spelling of 897543860 in words is "eight hundred ninety-seven million, five hundred forty-three thousand, eight hundred sixty".