8540566 has 4 divisors (see below), whose sum is σ = 12810852. Its totient is φ = 4270282.

The previous prime is 8540563. The next prime is 8540569. The reversal of 8540566 is 6650458.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (8540563) and next prime (8540569).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8540563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2135140 + ... + 2135143.

It is an arithmetic number, because the mean of its divisors is an integer number (3202713).

Almost surely, 2^8540566 is an apocalyptic number.

8540566 is a deficient number, since it is larger than the sum of its proper divisors (4270286).

8540566 is a wasteful number, since it uses less digits than its factorization.

8540566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4270285.

The product of its (nonzero) digits is 28800, while the sum is 34.

The square root of 8540566 is about 2922.4246782424. The cubic root of 8540566 is about 204.4068996334.

The spelling of 8540566 in words is "eight million, five hundred forty thousand, five hundred sixty-six".