422663261 has 2 divisors, whose sum is σ = 422663262. Its totient is φ = 422663260.

The previous prime is 422663251. The next prime is 422663323. The reversal of 422663261 is 162366224.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 422508025 + 155236 = 20555^2 + 394^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-422663261 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 (422663201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211331630 + 211331631.

It is an arithmetic number, because the mean of its divisors is an integer number (211331631).

Almost surely, 2^422663261 is an apocalyptic number.

It is an amenable number.

422663261 is a deficient number, since it is larger than the sum of its proper divisors (1).

422663261 is an equidigital number, since it uses as much as digits as its factorization.

422663261 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20736, while the sum is 32.

The square root of 422663261 is about 20558.7757660810. The cubic root of 422663261 is about 750.4668269994.

The spelling of 422663261 in words is "four hundred twenty-two million, six hundred sixty-three thousand, two hundred sixty-one".