36621223 has 4 divisors (see below), whose sum is σ = 36640888. Its totient is φ = 36601560.

The previous prime is 36621217. The next prime is 36621239. The reversal of 36621223 is 32212663.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32212663 = 7 ⋅4601809.

It is a cyclic number.

It is not a de Polignac number, because 36621223 - 2¹⁷ = 36490151 is a prime.

It is a super-2 number, since 2×36621223² = 2682227948031458, which contains 22 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 (36624223) 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, 6708 + ... + 10873.

It is an arithmetic number, because the mean of its divisors is an integer number (9160222).

Almost surely, 2^36621223 is an apocalyptic number.

36621223 is a deficient number, since it is larger than the sum of its proper divisors (19665).

36621223 is a wasteful number, since it uses less digits than its factorization.

36621223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19664.

The product of its digits is 2592, while the sum is 25.

The square root of 36621223 is about 6051.5471575457. The cubic root of 36621223 is about 332.0811935496.

Adding to 36621223 its reverse (32212663), we get a palindrome (68833886).

The spelling of 36621223 in words is "thirty-six million, six hundred twenty-one thousand, two hundred twenty-three".