536418721 has 4 divisors (see below), whose sum is σ = 537663744. Its totient is φ = 535173700.

The previous prime is 536418691. The next prime is 536418763. The reversal of 536418721 is 127814635.

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 536418721 - 2¹⁵ = 536385953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (536418521) 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, 621865 + ... + 622726.

It is an arithmetic number, because the mean of its divisors is an integer number (134415936).

Almost surely, 2^536418721 is an apocalyptic number.

It is an amenable number.

536418721 is a deficient number, since it is larger than the sum of its proper divisors (1245023).

536418721 is a wasteful number, since it uses less digits than its factorization.

536418721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1245022.

The product of its digits is 40320, while the sum is 37.

The square root of 536418721 is about 23160.7150364577. The cubic root of 536418721 is about 812.5210893461.

The spelling of 536418721 in words is "five hundred thirty-six million, four hundred eighteen thousand, seven hundred twenty-one".