66360023 has 4 divisors (see below), whose sum is σ = 66637920. Its totient is φ = 66082128.

The previous prime is 66360013. The next prime is 66360043. The reversal of 66360023 is 32006366.

It is a happy number.

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 66360023 - 2⁸ = 66359767 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 66359974 and 66360001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66360013) 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, 138590 + ... + 139067.

It is an arithmetic number, because the mean of its divisors is an integer number (16659480).

Almost surely, 2^66360023 is an apocalyptic number.

66360023 is a deficient number, since it is larger than the sum of its proper divisors (277897).

66360023 is a wasteful number, since it uses less digits than its factorization.

66360023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 277896.

The product of its (nonzero) digits is 3888, while the sum is 26.

The square root of 66360023 is about 8146.1661534737. The cubic root of 66360023 is about 404.8574878354.

Adding to 66360023 its reverse (32006366), we get a palindrome (98366389).

The spelling of 66360023 in words is "sixty-six million, three hundred sixty thousand, twenty-three".