536781563 has 4 divisors (see below), whose sum is σ = 537696600. Its totient is φ = 535866528.

The previous prime is 536781551. The next prime is 536781571. The reversal of 536781563 is 365187635.

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

It is a cyclic number.

It is not a de Polignac number, because 536781563 - 2⁴ = 536781547 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (536781263) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 456638 + ... + 457811.

It is an arithmetic number, because the mean of its divisors is an integer number (134424150).

Almost surely, 2^536781563 is an apocalyptic number.

536781563 is a deficient number, since it is larger than the sum of its proper divisors (915037).

536781563 is an equidigital number, since it uses as much as digits as its factorization.

536781563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 915036.

The product of its digits is 453600, while the sum is 44.

The square root of 536781563 is about 23168.5468469647. The cubic root of 536781563 is about 812.7042487063.

The spelling of 536781563 in words is "five hundred thirty-six million, seven hundred eighty-one thousand, five hundred sixty-three".