897543863 has 4 divisors (see below), whose sum is σ = 898730280. Its totient is φ = 896357448.

The previous prime is 897543827. The next prime is 897543877. The reversal of 897543863 is 368345798.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 368345798 = 2 ⋅184172899.

It is a cyclic number.

It is not a de Polignac number, because 897543863 - 2⁶ = 897543799 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (897543263) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 592073 + ... + 593586.

It is an arithmetic number, because the mean of its divisors is an integer number (224682570).

Almost surely, 2^897543863 is an apocalyptic number.

897543863 is a deficient number, since it is larger than the sum of its proper divisors (1186417).

897543863 is a wasteful number, since it uses less digits than its factorization.

897543863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1186416.

The product of its digits is 4354560, while the sum is 53.

The square root of 897543863 is about 29959.0364164137. The cubic root of 897543863 is about 964.6102976909.

The spelling of 897543863 in words is "eight hundred ninety-seven million, five hundred forty-three thousand, eight hundred sixty-three".