66696711 has 8 divisors (see below), whose sum is σ = 92795520. Its totient is φ = 42531192.

The previous prime is 66696703. The next prime is 66696719. The reversal of 66696711 is 11769666.

It is an interprime number because it is at equal distance from previous prime (66696703) and next prime (66696719).

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

It is not a de Polignac number, because 66696711 - 2³ = 66696703 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66696719) 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, 483241 + ... + 483378.

It is an arithmetic number, because the mean of its divisors is an integer number (11599440).

Almost surely, 2^66696711 is an apocalyptic number.

66696711 is a deficient number, since it is larger than the sum of its proper divisors (26098809).

66696711 is a wasteful number, since it uses less digits than its factorization.

66696711 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 966645.

The product of its digits is 81648, while the sum is 42.

The square root of 66696711 is about 8166.8054341952. The cubic root of 66696711 is about 405.5410357916.

The spelling of 66696711 in words is "sixty-six million, six hundred ninety-six thousand, seven hundred eleven".