66169703 has 4 divisors (see below), whose sum is σ = 66196968. Its totient is φ = 66142440.

The previous prime is 66169651. The next prime is 66169721. The reversal of 66169703 is 30796166.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 66169703 - 2⁶ = 66169639 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 (66169603) 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, 9593 + ... + 14978.

It is an arithmetic number, because the mean of its divisors is an integer number (16549242).

Almost surely, 2^66169703 is an apocalyptic number.

66169703 is a deficient number, since it is larger than the sum of its proper divisors (27265).

66169703 is a wasteful number, since it uses less digits than its factorization.

66169703 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27264.

The product of its (nonzero) digits is 40824, while the sum is 38.

The square root of 66169703 is about 8134.4761970271. The cubic root of 66169703 is about 404.4700745849.

The spelling of 66169703 in words is "sixty-six million, one hundred sixty-nine thousand, seven hundred three".