22664533 has 2 divisors, whose sum is σ = 22664534. Its totient is φ = 22664532.

The previous prime is 22664531. The next prime is 22664567. The reversal of 22664533 is 33546622.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16793604 + 5870929 = 4098^2 + 2423^2 .

It is a cyclic number.

It is not a de Polignac number, because 22664533 - 2¹ = 22664531 is a prime.

It is a super-2 number, since 2×22664533² = 1027362112216178, which contains 22 as substring.

Together with 22664531, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 22664495 and 22664504.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22664531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11332266 + 11332267.

It is an arithmetic number, because the mean of its divisors is an integer number (11332267).

Almost surely, 2^22664533 is an apocalyptic number.

It is an amenable number.

22664533 is a deficient number, since it is larger than the sum of its proper divisors (1).

22664533 is an equidigital number, since it uses as much as digits as its factorization.

22664533 is an evil number, because the sum of its binary digits is even.

The product of its digits is 25920, while the sum is 31.

The square root of 22664533 is about 4760.7282006012. The cubic root of 22664533 is about 282.9972780020.

It can be divided in two parts, 2266 and 4533, that multiplied together give a triangular number (10271778 = T₄₅₃₂).

The spelling of 22664533 in words is "twenty-two million, six hundred sixty-four thousand, five hundred thirty-three".