66959323 has 4 divisors (see below), whose sum is σ = 67876648. Its totient is φ = 66042000.

The previous prime is 66959309. The next prime is 66959327. The reversal of 66959323 is 32395966.

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

It is a cyclic number.

It is not a de Polignac number, because 66959323 - 2⁹ = 66958811 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 66959323.

It is not an unprimeable number, because it can be changed into a prime (66959327) 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, 458553 + ... + 458698.

It is an arithmetic number, because the mean of its divisors is an integer number (16969162).

Almost surely, 2^66959323 is an apocalyptic number.

66959323 is a deficient number, since it is larger than the sum of its proper divisors (917325).

66959323 is an equidigital number, since it uses as much as digits as its factorization.

66959323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 917324.

The product of its digits is 262440, while the sum is 43.

The square root of 66959323 is about 8182.8676513799. The cubic root of 66959323 is about 406.0725985830.

The spelling of 66959323 in words is "sixty-six million, nine hundred fifty-nine thousand, three hundred twenty-three".