66703774 has 8 divisors (see below), whose sum is σ = 100372248. Its totient is φ = 33246360.

The previous prime is 66703771. The next prime is 66703781. The reversal of 66703774 is 47730766.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66703771) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 51972 + ... + 53239.

It is an arithmetic number, because the mean of its divisors is an integer number (12546531).

Almost surely, 2^66703774 is an apocalyptic number.

66703774 is a deficient number, since it is larger than the sum of its proper divisors (33668474).

66703774 is a wasteful number, since it uses less digits than its factorization.

66703774 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105530.

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

The square root of 66703774 is about 8167.2378439715. The cubic root of 66703774 is about 405.5553505166. Note that the first 3 decimals are identical.

The spelling of 66703774 in words is "sixty-six million, seven hundred three thousand, seven hundred seventy-four".