422647261 has 2 divisors, whose sum is σ = 422647262. Its totient is φ = 422647260.

The previous prime is 422647231. The next prime is 422647271. The reversal of 422647261 is 162746224.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 268763236 + 153884025 = 16394^2 + 12405^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-422647261 is a prime.

It is a super-3 number, since 3×422647261³ (a number of 27 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (422647201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211323630 + 211323631.

It is an arithmetic number, because the mean of its divisors is an integer number (211323631).

Almost surely, 2^422647261 is an apocalyptic number.

It is an amenable number.

422647261 is a deficient number, since it is larger than the sum of its proper divisors (1).

422647261 is an equidigital number, since it uses as much as digits as its factorization.

422647261 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 32256, while the sum is 34.

The square root of 422647261 is about 20558.3866341695. The cubic root of 422647261 is about 750.4573571907.

The spelling of 422647261 in words is "four hundred twenty-two million, six hundred forty-seven thousand, two hundred sixty-one".