66792227 has 2 divisors, whose sum is σ = 66792228. Its totient is φ = 66792226.

The previous prime is 66792181. The next prime is 66792241. The reversal of 66792227 is 72229766.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 66792227 - 2⁸ = 66791971 is a prime.

It is a super-2 number, since 2×66792227² = 8922403175239058, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (66792247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33396113 + 33396114.

It is an arithmetic number, because the mean of its divisors is an integer number (33396114).

Almost surely, 2^66792227 is an apocalyptic number.

66792227 is a deficient number, since it is larger than the sum of its proper divisors (1).

66792227 is an equidigital number, since it uses as much as digits as its factorization.

66792227 is an evil number, because the sum of its binary digits is even.

The product of its digits is 127008, while the sum is 41.

The square root of 66792227 is about 8172.6511610370. The cubic root of 66792227 is about 405.7345344947.

The spelling of 66792227 in words is "sixty-six million, seven hundred ninety-two thousand, two hundred twenty-seven".