66275423 has 2 divisors, whose sum is σ = 66275424. Its totient is φ = 66275422.

The previous prime is 66275383. The next prime is 66275437. The reversal of 66275423 is 32457266.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 66275423 - 2⁶ = 66275359 is a prime.

It is a super-3 number, since 3×66275423³ (a number of 24 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66275483) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33137711 + 33137712.

It is an arithmetic number, because the mean of its divisors is an integer number (33137712).

Almost surely, 2^66275423 is an apocalyptic number.

66275423 is a deficient number, since it is larger than the sum of its proper divisors (1).

66275423 is an equidigital number, since it uses as much as digits as its factorization.

66275423 is an evil number, because the sum of its binary digits is even.

The product of its digits is 60480, while the sum is 35.

The square root of 66275423 is about 8140.9718707289. The cubic root of 66275423 is about 404.6853686018.

The spelling of 66275423 in words is "sixty-six million, two hundred seventy-five thousand, four hundred twenty-three".