66582807 has 8 divisors (see below), whose sum is σ = 89416320. Its totient is φ = 44068920.

The previous prime is 66582797. The next prime is 66582827. The reversal of 66582807 is 70828566.

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

It is not a de Polignac number, because 66582807 - 2⁷ = 66582679 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66582827) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 79419 + ... + 80252.

It is an arithmetic number, because the mean of its divisors is an integer number (11177040).

Almost surely, 2^66582807 is an apocalyptic number.

66582807 is a deficient number, since it is larger than the sum of its proper divisors (22833513).

66582807 is a wasteful number, since it uses less digits than its factorization.

66582807 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159813.

The product of its (nonzero) digits is 161280, while the sum is 42.

The square root of 66582807 is about 8159.8288584994. The cubic root of 66582807 is about 405.3100445565.

The spelling of 66582807 in words is "sixty-six million, five hundred eighty-two thousand, eight hundred seven".