66743323 has 4 divisors (see below), whose sum is σ = 67739560. Its totient is φ = 65747088.

The previous prime is 66743317. The next prime is 66743329. The reversal of 66743323 is 32334766.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (66743317) and next prime (66743329).

It is a cyclic number.

It is not a de Polignac number, because 66743323 - 2⁵ = 66743291 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66743329) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 498018 + ... + 498151.

It is an arithmetic number, because the mean of its divisors is an integer number (16934890).

Almost surely, 2^66743323 is an apocalyptic number.

66743323 is a deficient number, since it is larger than the sum of its proper divisors (996237).

66743323 is an equidigital number, since it uses as much as digits as its factorization.

66743323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 996236.

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

The square root of 66743323 is about 8169.6586832009. The cubic root of 66743323 is about 405.6354866104.

The spelling of 66743323 in words is "sixty-six million, seven hundred forty-three thousand, three hundred twenty-three".