66444794 has 8 divisors (see below), whose sum is σ = 107333940. Its totient is φ = 30666816.

The previous prime is 66444787. The next prime is 66444803. The reversal of 66444794 is 49744466.

It can be written as a sum of positive squares in 2 ways, for example, as 53217025 + 13227769 = 7295^2 + 3637^2 .

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

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, 1277759 + ... + 1277810.

Almost surely, 2^66444794 is an apocalyptic number.

66444794 is a deficient number, since it is larger than the sum of its proper divisors (40889146).

66444794 is a wasteful number, since it uses less digits than its factorization.

66444794 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2555584.

The product of its digits is 580608, while the sum is 44.

The square root of 66444794 is about 8151.3676153146. The cubic root of 66444794 is about 405.0298083024.

The spelling of 66444794 in words is "sixty-six million, four hundred forty-four thousand, seven hundred ninety-four".