66337423 has 2 divisors, whose sum is σ = 66337424. Its totient is φ = 66337422.

The previous prime is 66337421. The next prime is 66337429. The reversal of 66337423 is 32473366.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 66337423 - 2¹ = 66337421 is a prime.

Together with 66337421, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66337421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33168711 + 33168712.

It is an arithmetic number, because the mean of its divisors is an integer number (33168712).

Almost surely, 2^66337423 is an apocalyptic number.

66337423 is a deficient number, since it is larger than the sum of its proper divisors (1).

66337423 is an equidigital number, since it uses as much as digits as its factorization.

66337423 is an evil number, because the sum of its binary digits is even.

The product of its digits is 54432, while the sum is 34.

The square root of 66337423 is about 8144.7788797487. The cubic root of 66337423 is about 404.8115223192.

The spelling of 66337423 in words is "sixty-six million, three hundred thirty-seven thousand, four hundred twenty-three".