22198747 has 2 divisors, whose sum is σ = 22198748. Its totient is φ = 22198746.

The previous prime is 22198739. The next prime is 22198769. The reversal of 22198747 is 74789122.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22198747 - 2³ = 22198739 is a prime.

It is not a weakly prime, because it can be changed into another prime (22198727) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11099373 + 11099374.

It is an arithmetic number, because the mean of its divisors is an integer number (11099374).

Almost surely, 2^22198747 is an apocalyptic number.

22198747 is a deficient number, since it is larger than the sum of its proper divisors (1).

22198747 is an equidigital number, since it uses as much as digits as its factorization.

22198747 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 56448, while the sum is 40.

The square root of 22198747 is about 4711.5546266599. The cubic root of 22198747 is about 281.0451880402.

The spelling of 22198747 in words is "twenty-two million, one hundred ninety-eight thousand, seven hundred forty-seven".