65140563 has 4 divisors (see below), whose sum is σ = 86854088. Its totient is φ = 43427040.

The previous prime is 65140561. The next prime is 65140573. The reversal of 65140563 is 36504156.

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

It is not a de Polignac number, because 65140563 - 2¹ = 65140561 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 65140563.

It is not an unprimeable number, because it can be changed into a prime (65140561) 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, 10856758 + ... + 10856763.

It is an arithmetic number, because the mean of its divisors is an integer number (21713522).

Almost surely, 2^65140563 is an apocalyptic number.

65140563 is a deficient number, since it is larger than the sum of its proper divisors (21713525).

65140563 is a wasteful number, since it uses less digits than its factorization.

65140563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21713524.

The product of its (nonzero) digits is 10800, while the sum is 30.

The square root of 65140563 is about 8070.9703877539. The cubic root of 65140563 is about 402.3621955369.

It can be divided in two parts, 65140 and 563, that added together give a triangular number (65703 = T₃₆₂).

The spelling of 65140563 in words is "sixty-five million, one hundred forty thousand, five hundred sixty-three".