66045023 has 4 divisors (see below), whose sum is σ = 72049128. Its totient is φ = 60040920.

The previous prime is 66044989. The next prime is 66045041. The reversal of 66045023 is 32054066.

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 66045023 - 2⁶ = 66044959 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 66044983 and 66045001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66045043) 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, 3002036 + ... + 3002057.

It is an arithmetic number, because the mean of its divisors is an integer number (18012282).

Almost surely, 2^66045023 is an apocalyptic number.

66045023 is a deficient number, since it is larger than the sum of its proper divisors (6004105).

66045023 is a wasteful number, since it uses less digits than its factorization.

66045023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6004104.

The product of its (nonzero) digits is 4320, while the sum is 26.

The square root of 66045023 is about 8126.8089063297. The cubic root of 66045023 is about 404.2158744824.

Adding to 66045023 its reverse (32054066), we get a palindrome (98099089).

The spelling of 66045023 in words is "sixty-six million, forty-five thousand, twenty-three".