8563897 has 4 divisors (see below), whose sum is σ = 8611920. Its totient is φ = 8515876.

The previous prime is 8563883. The next prime is 8563901. The reversal of 8563897 is 7983658.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 7983658 = 2 ⋅3991829.

It is a cyclic number.

It is not a de Polignac number, because 8563897 - 2⁷ = 8563769 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8563817) 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 3 ways as a sum of consecutive naturals, for example, 23743 + ... + 24100.

It is an arithmetic number, because the mean of its divisors is an integer number (2152980).

Almost surely, 2^8563897 is an apocalyptic number.

It is an amenable number.

8563897 is a deficient number, since it is larger than the sum of its proper divisors (48023).

8563897 is a wasteful number, since it uses less digits than its factorization.

8563897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48022.

The product of its digits is 362880, while the sum is 46.

The square root of 8563897 is about 2926.4136754738. The cubic root of 8563897 is about 204.5928623791.

It can be divided in two parts, 856 and 3897, that added together give a triangular number (4753 = T₉₇).

The spelling of 8563897 in words is "eight million, five hundred sixty-three thousand, eight hundred ninety-seven".