66746911 has 8 divisors (see below), whose sum is σ = 83217024. Its totient is φ = 52010520.

The previous prime is 66746903. The next prime is 66746917. The reversal of 66746911 is 11964766.

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 66746911 - 2³ = 66746903 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66746917) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 433345 + ... + 433498.

It is an arithmetic number, because the mean of its divisors is an integer number (10402128).

Almost surely, 2^66746911 is an apocalyptic number.

66746911 is a deficient number, since it is larger than the sum of its proper divisors (16470113).

66746911 is a wasteful number, since it uses less digits than its factorization.

66746911 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 866861.

The product of its digits is 54432, while the sum is 40.

The square root of 66746911 is about 8169.8782732670. The cubic root of 66746911 is about 405.6427552229.

The spelling of 66746911 in words is "sixty-six million, seven hundred forty-six thousand, nine hundred eleven".