22867639 has 2 divisors, whose sum is σ = 22867640. Its totient is φ = 22867638.

The previous prime is 22867613. The next prime is 22867643. The reversal of 22867639 is 93676822.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22867639 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22867595 and 22867604.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22867679) 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 as a sum of consecutive naturals, namely, 11433819 + 11433820.

It is an arithmetic number, because the mean of its divisors is an integer number (11433820).

Almost surely, 2^22867639 is an apocalyptic number.

22867639 is a deficient number, since it is larger than the sum of its proper divisors (1).

22867639 is an equidigital number, since it uses as much as digits as its factorization.

22867639 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 217728, while the sum is 43.

The square root of 22867639 is about 4782.0120242425. The cubic root of 22867639 is about 283.8401161498.

The spelling of 22867639 in words is "twenty-two million, eight hundred sixty-seven thousand, six hundred thirty-nine".