66444854 has 8 divisors (see below), whose sum is σ = 113905488. Its totient is φ = 28476360.

The previous prime is 66444841. The next prime is 66444869. The reversal of 66444854 is 45844466.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2373017 + ... + 2373044.

It is an arithmetic number, because the mean of its divisors is an integer number (14238186).

Almost surely, 2^66444854 is an apocalyptic number.

66444854 is a deficient number, since it is larger than the sum of its proper divisors (47460634).

66444854 is a wasteful number, since it uses less digits than its factorization.

66444854 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4746070.

The product of its digits is 368640, while the sum is 41.

The square root of 66444854 is about 8151.3712956778. The cubic root of 66444854 is about 405.0299302170.

The spelling of 66444854 in words is "sixty-six million, four hundred forty-four thousand, eight hundred fifty-four".