36405223 has 4 divisors (see below), whose sum is σ = 37092168. Its totient is φ = 35718280.

The previous prime is 36405221. The next prime is 36405233. The reversal of 36405223 is 32250463.

It is a happy number.

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 36405223 - 2¹ = 36405221 is a prime.

It is a super-3 number, since 3×36405223³ (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (36405221) 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, 343393 + ... + 343498.

It is an arithmetic number, because the mean of its divisors is an integer number (9273042).

Almost surely, 2^36405223 is an apocalyptic number.

36405223 is a deficient number, since it is larger than the sum of its proper divisors (686945).

36405223 is an equidigital number, since it uses as much as digits as its factorization.

36405223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 686944.

The product of its (nonzero) digits is 4320, while the sum is 25.

The square root of 36405223 is about 6033.6740879832. The cubic root of 36405223 is about 331.4270097971.

Adding to 36405223 its reverse (32250463), we get a palindrome (68655686).

The spelling of 36405223 in words is "thirty-six million, four hundred five thousand, two hundred twenty-three".