66182315 has 4 divisors (see below), whose sum is σ = 79418784. Its totient is φ = 52945848.

The previous prime is 66182299. The next prime is 66182327. The reversal of 66182315 is 51328166.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 51328166 = 2 ⋅25664083.

It is a cyclic number.

It is not a de Polignac number, because 66182315 - 2⁴ = 66182299 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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, 6618227 + ... + 6618236.

It is an arithmetic number, because the mean of its divisors is an integer number (19854696).

Almost surely, 2^66182315 is an apocalyptic number.

66182315 is a deficient number, since it is larger than the sum of its proper divisors (13236469).

66182315 is a wasteful number, since it uses less digits than its factorization.

66182315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13236468.

The product of its digits is 8640, while the sum is 32.

The square root of 66182315 is about 8135.2513790294. The cubic root of 66182315 is about 404.4957703958.

The spelling of 66182315 in words is "sixty-six million, one hundred eighty-two thousand, three hundred fifteen".