71622233 has 2 divisors, whose sum is σ = 71622234. Its totient is φ = 71622232.

The previous prime is 71622217. The next prime is 71622247. The reversal of 71622233 is 33222617.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 42159049 + 29463184 = 6493^2 + 5428^2 .

It is a cyclic number.

It is not a de Polignac number, because 71622233 - 2⁴ = 71622217 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (71622833) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35811116 + 35811117.

It is an arithmetic number, because the mean of its divisors is an integer number (35811117).

Almost surely, 2^71622233 is an apocalyptic number.

It is an amenable number.

71622233 is a deficient number, since it is larger than the sum of its proper divisors (1).

71622233 is an equidigital number, since it uses as much as digits as its factorization.

71622233 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3024, while the sum is 26.

The square root of 71622233 is about 8462.9919650204. The cubic root of 71622233 is about 415.2879078278.

The spelling of 71622233 in words is "seventy-one million, six hundred twenty-two thousand, two hundred thirty-three".