66882309 has 8 divisors (see below), whose sum is σ = 96036192. Its totient is φ = 41158320.

The previous prime is 66882307. The next prime is 66882311. The reversal of 66882309 is 90328866.

It is an interprime number because it is at equal distance from previous prime (66882307) and next prime (66882311).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 66882309 - 2¹ = 66882307 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66882307) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 857427 + ... + 857504.

It is an arithmetic number, because the mean of its divisors is an integer number (12004524).

Almost surely, 2^66882309 is an apocalyptic number.

It is an amenable number.

66882309 is a deficient number, since it is larger than the sum of its proper divisors (29153883).

66882309 is a wasteful number, since it uses less digits than its factorization.

66882309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1714947.

The product of its (nonzero) digits is 124416, while the sum is 42.

The square root of 66882309 is about 8178.1604899880. The cubic root of 66882309 is about 405.9168559065.

The spelling of 66882309 in words is "sixty-six million, eight hundred eighty-two thousand, three hundred nine".