66023743 has 8 divisors (see below), whose sum is σ = 68277168. Its totient is φ = 63807744.

The previous prime is 66023719. The next prime is 66023747. The reversal of 66023743 is 34732066.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 66023743 - 2⁹ = 66023231 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66023747) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5746 + ... + 12847.

It is an arithmetic number, because the mean of its divisors is an integer number (8534646).

Almost surely, 2^66023743 is an apocalyptic number.

66023743 is a deficient number, since it is larger than the sum of its proper divisors (2253425).

66023743 is a wasteful number, since it uses less digits than its factorization.

66023743 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18713.

The product of its (nonzero) digits is 18144, while the sum is 31.

The square root of 66023743 is about 8125.4995538736. The cubic root of 66023743 is about 404.1724564351.

It can be divided in two parts, 66023 and 743, that added together give a palindrome (66766).

The spelling of 66023743 in words is "sixty-six million, twenty-three thousand, seven hundred forty-three".