66276823 has 6 divisors (see below), whose sum is σ = 69284264. Its totient is φ = 63394716.

The previous prime is 66276817. The next prime is 66276841. The reversal of 66276823 is 32867266.

It is not a de Polignac number, because 66276823 - 2⁹ = 66276311 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 (66276323) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 62115 + ... + 63172.

Almost surely, 2^66276823 is an apocalyptic number.

66276823 is a deficient number, since it is larger than the sum of its proper divisors (3007441).

66276823 is a wasteful number, since it uses less digits than its factorization.

66276823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125333 (or 125310 counting only the distinct ones).

The product of its digits is 145152, while the sum is 40.

The square root of 66276823 is about 8141.0578550948. The cubic root of 66276823 is about 404.6882181022.

The spelling of 66276823 in words is "sixty-six million, two hundred seventy-six thousand, eight hundred twenty-three".