66226319 has 2 divisors, whose sum is σ = 66226320. Its totient is φ = 66226318.

The previous prime is 66226313. The next prime is 66226333. The reversal of 66226319 is 91362266.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-66226319 is a prime.

It is a super-2 number, since 2×66226319² = 8771850656579522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66226313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33113159 + 33113160.

It is an arithmetic number, because the mean of its divisors is an integer number (33113160).

Almost surely, 2^66226319 is an apocalyptic number.

66226319 is a deficient number, since it is larger than the sum of its proper divisors (1).

66226319 is an equidigital number, since it uses as much as digits as its factorization.

66226319 is an evil number, because the sum of its binary digits is even.

The product of its digits is 23328, while the sum is 35.

The square root of 66226319 is about 8137.9554557641. The cubic root of 66226319 is about 404.5853990146.

The spelling of 66226319 in words is "sixty-six million, two hundred twenty-six thousand, three hundred nineteen".