66611703 has 16 divisors (see below), whose sum is σ = 93989376. Its totient is φ = 41875680.

The previous prime is 66611689. The next prime is 66611711. The reversal of 66611703 is 30711666.

It is not a de Polignac number, because 66611703 - 2⁶ = 66611639 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66611003) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1900 + ... + 11697.

It is an arithmetic number, because the mean of its divisors is an integer number (5874336).

Almost surely, 2^66611703 is an apocalyptic number.

66611703 is a deficient number, since it is larger than the sum of its proper divisors (27377673).

66611703 is a wasteful number, since it uses less digits than its factorization.

66611703 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13694.

The product of its (nonzero) digits is 4536, while the sum is 30.

The square root of 66611703 is about 8161.5992918055. The cubic root of 66611703 is about 405.3686690259.

The spelling of 66611703 in words is "sixty-six million, six hundred eleven thousand, seven hundred three".