66432023 has 4 divisors (see below), whose sum is σ = 75922320. Its totient is φ = 56941728.

The previous prime is 66432017. The next prime is 66432029. The reversal of 66432023 is 32023466.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32023466 = 2 ⋅16011733.

It is an interprime number because it is at equal distance from previous prime (66432017) and next prime (66432029).

It is a cyclic number.

It is not a de Polignac number, because 66432023 - 2⁴ = 66432007 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 66431983 and 66432001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66432029) 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, 4745138 + ... + 4745151.

It is an arithmetic number, because the mean of its divisors is an integer number (18980580).

Almost surely, 2^66432023 is an apocalyptic number.

66432023 is a deficient number, since it is larger than the sum of its proper divisors (9490297).

66432023 is an equidigital number, since it uses as much as digits as its factorization.

66432023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9490296.

The product of its (nonzero) digits is 5184, while the sum is 26.

The square root of 66432023 is about 8150.5842121899. The cubic root of 66432023 is about 405.0038570989.

Adding to 66432023 its reverse (32023466), we get a palindrome (98455489).

The spelling of 66432023 in words is "sixty-six million, four hundred thirty-two thousand, twenty-three".