66426586 has 8 divisors (see below), whose sum is σ = 99823680. Its totient is φ = 33152028.

The previous prime is 66426551. The next prime is 66426587. The reversal of 66426586 is 68562466.

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

It is not an unprimeable number, because it can be changed into a prime (66426587) by changing a digit.

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, 29266 + ... + 31453.

It is an arithmetic number, because the mean of its divisors is an integer number (12477960).

Almost surely, 2^66426586 is an apocalyptic number.

66426586 is a deficient number, since it is larger than the sum of its proper divisors (33397094).

66426586 is a wasteful number, since it uses less digits than its factorization.

66426586 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61268.

The product of its digits is 414720, while the sum is 43.

The square root of 66426586 is about 8150.2506709917. The cubic root of 66426586 is about 404.9928078792.

The spelling of 66426586 in words is "sixty-six million, four hundred twenty-six thousand, five hundred eighty-six".