22761397 has 2 divisors, whose sum is σ = 22761398. Its totient is φ = 22761396.

The previous prime is 22761391. The next prime is 22761439. The reversal of 22761397 is 79316722.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14432401 + 8328996 = 3799^2 + 2886^2 .

It is a cyclic number.

It is not a de Polignac number, because 22761397 - 2¹⁹ = 22237109 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22761391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11380698 + 11380699.

It is an arithmetic number, because the mean of its divisors is an integer number (11380699).

Almost surely, 2^22761397 is an apocalyptic number.

It is an amenable number.

22761397 is a deficient number, since it is larger than the sum of its proper divisors (1).

22761397 is an equidigital number, since it uses as much as digits as its factorization.

22761397 is an evil number, because the sum of its binary digits is even.

The product of its digits is 31752, while the sum is 37.

The square root of 22761397 is about 4770.8905877205. The cubic root of 22761397 is about 283.3998642687.

The spelling of 22761397 in words is "twenty-two million, seven hundred sixty-one thousand, three hundred ninety-seven".