22270397 has 2 divisors, whose sum is σ = 22270398. Its totient is φ = 22270396.

The previous prime is 22270363. The next prime is 22270403. The reversal of 22270397 is 79307222.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18541636 + 3728761 = 4306^2 + 1931^2 .

It is a cyclic number.

It is not a de Polignac number, because 22270397 - 2²⁰ = 21221821 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22270097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11135198 + 11135199.

It is an arithmetic number, because the mean of its divisors is an integer number (11135199).

Almost surely, 2^22270397 is an apocalyptic number.

It is an amenable number.

22270397 is a deficient number, since it is larger than the sum of its proper divisors (1).

22270397 is an equidigital number, since it uses as much as digits as its factorization.

22270397 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10584, while the sum is 32.

The square root of 22270397 is about 4719.1521484267. The cubic root of 22270397 is about 281.3472360414.

The spelling of 22270397 in words is "twenty-two million, two hundred seventy thousand, three hundred ninety-seven".