22666019 has 2 divisors, whose sum is σ = 22666020. Its totient is φ = 22666018.

The previous prime is 22666003. The next prime is 22666027. The reversal of 22666019 is 91066622.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22666019 - 2⁴ = 22666003 is a prime.

It is a super-2 number, since 2×22666019² = 1027496834616722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (22666099) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11333009 + 11333010.

It is an arithmetic number, because the mean of its divisors is an integer number (11333010).

Almost surely, 2^22666019 is an apocalyptic number.

22666019 is a deficient number, since it is larger than the sum of its proper divisors (1).

22666019 is an equidigital number, since it uses as much as digits as its factorization.

22666019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 22666019 is about 4760.8842666043. The cubic root of 22666019 is about 283.0034627719.

The spelling of 22666019 in words is "twenty-two million, six hundred sixty-six thousand, nineteen".