66770044 has 24 divisors (see below), whose sum is σ = 127911168. Its totient is φ = 30245040.

The previous prime is 66770023. The next prime is 66770057. The reversal of 66770044 is 44007766.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is a zygodrome in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 66769991 and 66770009.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 11037 + ... + 15979.

It is an arithmetic number, because the mean of its divisors is an integer number (5329632).

Almost surely, 2^66770044 is an apocalyptic number.

It is an amenable number.

66770044 is a deficient number, since it is larger than the sum of its proper divisors (61141124).

66770044 is a wasteful number, since it uses less digits than its factorization.

66770044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5265 (or 5263 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 34.

The square root of 66770044 is about 8171.2938999892. The cubic root of 66770044 is about 405.6896120730.

The spelling of 66770044 in words is "sixty-six million, seven hundred seventy thousand, forty-four".