66446159 has 8 divisors (see below), whose sum is σ = 71794800. Its totient is φ = 61131456.

The previous prime is 66446143. The next prime is 66446167. The reversal of 66446159 is 95164466.

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

It is a cyclic number.

It is not a de Polignac number, because 66446159 - 2⁴ = 66446143 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66446129) 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, 4334 + ... + 12315.

It is an arithmetic number, because the mean of its divisors is an integer number (8974350).

Almost surely, 2^66446159 is an apocalyptic number.

66446159 is a deficient number, since it is larger than the sum of its proper divisors (5348641).

66446159 is a wasteful number, since it uses less digits than its factorization.

66446159 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16969.

The product of its digits is 155520, while the sum is 41.

The square root of 66446159 is about 8151.4513431658. The cubic root of 66446159 is about 405.0325818425.

The spelling of 66446159 in words is "sixty-six million, four hundred forty-six thousand, one hundred fifty-nine".