66274343 has 2 divisors, whose sum is σ = 66274344. Its totient is φ = 66274342.

The previous prime is 66274331. The next prime is 66274349. The reversal of 66274343 is 34347266.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-66274343 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66274349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33137171 + 33137172.

It is an arithmetic number, because the mean of its divisors is an integer number (33137172).

Almost surely, 2^66274343 is an apocalyptic number.

66274343 is a deficient number, since it is larger than the sum of its proper divisors (1).

66274343 is an equidigital number, since it uses as much as digits as its factorization.

66274343 is an evil number, because the sum of its binary digits is even.

The product of its digits is 72576, while the sum is 35.

The square root of 66274343 is about 8140.9055393120. The cubic root of 66274343 is about 404.6831703884.

The spelling of 66274343 in words is "sixty-six million, two hundred seventy-four thousand, three hundred forty-three".