8997565 has 8 divisors (see below), whose sum is σ = 10902528. Its totient is φ = 7127760.

The previous prime is 8997553. The next prime is 8997587. The reversal of 8997565 is 5657998.

8997565 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 8997565 - 2¹⁹ = 8473277 is a prime.

It is a d-powerful number, because it can be written as 8⁷ + 9 + 9⁷ + 7⁶ + 5 + 6⁶ + 5⁹ .

It is a Duffinian number.

8997565 is a lucky number.

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, 8221 + ... + 9250.

It is an arithmetic number, because the mean of its divisors is an integer number (1362816).

Almost surely, 2^8997565 is an apocalyptic number.

It is an amenable number.

8997565 is a deficient number, since it is larger than the sum of its proper divisors (1904963).

8997565 is a wasteful number, since it uses less digits than its factorization.

8997565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17579.

The product of its digits is 680400, while the sum is 49.

The square root of 8997565 is about 2999.5941392128. The cubic root of 8997565 is about 207.9896213386.

It can be divided in two parts, 899 and 7565, that added together give a square (8464 = 92²).

The spelling of 8997565 in words is "eight million, nine hundred ninety-seven thousand, five hundred sixty-five".