66882717 has 72 divisors (see below), whose sum is σ = 117730080. Its totient is φ = 36158400.

The previous prime is 66882707. The next prime is 66882719. The reversal of 66882717 is 71728866.

It is not a de Polignac number, because 66882717 - 2⁶ = 66882653 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66882719) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 1807623 + ... + 1807659.

It is an arithmetic number, because the mean of its divisors is an integer number (1635140).

Almost surely, 2^66882717 is an apocalyptic number.

It is an amenable number.

66882717 is a deficient number, since it is larger than the sum of its proper divisors (50847363).

66882717 is a wasteful number, since it uses less digits than its factorization.

66882717 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135 (or 101 counting only the distinct ones).

The product of its digits is 225792, while the sum is 45.

The square root of 66882717 is about 8178.1854344347. The cubic root of 66882717 is about 405.9176813053.

The spelling of 66882717 in words is "sixty-six million, eight hundred eighty-two thousand, seven hundred seventeen".