66774703 has 8 divisors (see below), whose sum is σ = 67633328. Its totient is φ = 65919744.

The previous prime is 66774661. The next prime is 66774707. The reversal of 66774703 is 30747766.

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 66774703 - 2²¹ = 64677551 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 (66774707) by changing a digit.

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, 58900 + ... + 60022.

It is an arithmetic number, because the mean of its divisors is an integer number (8454166).

Almost surely, 2^66774703 is an apocalyptic number.

66774703 is a deficient number, since it is larger than the sum of its proper divisors (858625).

66774703 is a wasteful number, since it uses less digits than its factorization.

66774703 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1833.

The product of its (nonzero) digits is 148176, while the sum is 40.

The square root of 66774703 is about 8171.5789783860. The cubic root of 66774703 is about 405.6990477611.

The spelling of 66774703 in words is "sixty-six million, seven hundred seventy-four thousand, seven hundred three".