66570660206 has 8 divisors (see below), whose sum is σ = 99925970760. Its totient is φ = 33262003288.

The previous prime is 66570660193. The next prime is 66570660263. The reversal of 66570660206 is 60206607566.

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

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11659841 + ... + 11665548.

It is an arithmetic number, because the mean of its divisors is an integer number (12490746345).

Almost surely, 2^66570660206 is an apocalyptic number.

66570660206 is a deficient number, since it is larger than the sum of its proper divisors (33355310554).

66570660206 is a wasteful number, since it uses less digits than its factorization.

66570660206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23326818.

The product of its (nonzero) digits is 544320, while the sum is 44.

The spelling of 66570660206 in words is "sixty-six billion, five hundred seventy million, six hundred sixty thousand, two hundred six".