66414023 has 4 divisors (see below), whose sum is σ = 71522808. Its totient is φ = 61305240.

The previous prime is 66413993. The next prime is 66414077. The reversal of 66414023 is 32041466.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32041466 = 2 ⋅16020733.

It is a cyclic number.

It is not a de Polignac number, because 66414023 - 2²² = 62219719 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 66413983 and 66414001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66414923) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2554373 + ... + 2554398.

It is an arithmetic number, because the mean of its divisors is an integer number (17880702).

Almost surely, 2^66414023 is an apocalyptic number.

66414023 is a deficient number, since it is larger than the sum of its proper divisors (5108785).

66414023 is a wasteful number, since it uses less digits than its factorization.

66414023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5108784.

The product of its (nonzero) digits is 3456, while the sum is 26.

The square root of 66414023 is about 8149.4799220564. The cubic root of 66414023 is about 404.9672747017.

Adding to 66414023 its reverse (32041466), we get a palindrome (98455489).

The spelling of 66414023 in words is "sixty-six million, four hundred fourteen thousand, twenty-three".