22372663 has 4 divisors (see below), whose sum is σ = 23688720. Its totient is φ = 21056608.

The previous prime is 22372643. The next prime is 22372667. The reversal of 22372663 is 36627322.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 36627322 = 2 ⋅18313661.

It is not a de Polignac number, because 22372663 - 2¹³ = 22364471 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22372667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 658003 + ... + 658036.

It is an arithmetic number, because the mean of its divisors is an integer number (5922180).

Almost surely, 2^22372663 is an apocalyptic number.

22372663 is a deficient number, since it is larger than the sum of its proper divisors (1316057).

22372663 is a wasteful number, since it uses less digits than its factorization.

22372663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1316056.

The product of its digits is 18144, while the sum is 31.

The square root of 22372663 is about 4729.9749470795. The cubic root of 22372663 is about 281.7772287888. Note that the first 3 decimals are identical.

Adding to 22372663 its reverse (36627322), we get a palindrome (58999985).

It can be divided in two parts, 2237 and 2663, that added together give a square (4900 = 70²).

The spelling of 22372663 in words is "twenty-two million, three hundred seventy-two thousand, six hundred sixty-three".