66426366 has 16 divisors (see below), whose sum is σ = 137138688. Its totient is φ = 21427800.

The previous prime is 66426343. The next prime is 66426379. The reversal of 66426366 is 66362466.

It is a congruent number.

It is an unprimeable number.

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, 178380 + ... + 178751.

It is an arithmetic number, because the mean of its divisors is an integer number (8571168).

Almost surely, 2^66426366 is an apocalyptic number.

66426366 is an abundant number, since it is smaller than the sum of its proper divisors (70712322).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66426366 is a wasteful number, since it uses less digits than its factorization.

66426366 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 357167.

The product of its digits is 186624, while the sum is 39.

The square root of 66426366 is about 8150.2371744631. The cubic root of 66426366 is about 404.9923607765.

The spelling of 66426366 in words is "sixty-six million, four hundred twenty-six thousand, three hundred sixty-six".