40564653 has 4 divisors (see below), whose sum is σ = 54086208. Its totient is φ = 27043100.

The previous prime is 40564651. The next prime is 40564661. The reversal of 40564653 is 35646504.

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.

It is a cyclic number.

It is not a de Polignac number, because 40564653 - 2¹ = 40564651 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40564651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6760773 + ... + 6760778.

It is an arithmetic number, because the mean of its divisors is an integer number (13521552).

Almost surely, 2^40564653 is an apocalyptic number.

It is an amenable number.

40564653 is a deficient number, since it is larger than the sum of its proper divisors (13521555).

40564653 is a wasteful number, since it uses less digits than its factorization.

40564653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13521554.

The product of its (nonzero) digits is 43200, while the sum is 33.

The square root of 40564653 is about 6369.0386244707. The cubic root of 40564653 is about 343.5969144025.

The spelling of 40564653 in words is "forty million, five hundred sixty-four thousand, six hundred fifty-three".