66836187606 has 8 divisors (see below), whose sum is σ = 133672375224. Its totient is φ = 22278729200.

The previous prime is 66836187559. The next prime is 66836187619. The reversal of 66836187606 is 60678163866.

It is a happy number.

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

66836187606 is an admirable number.

It is a super-2 number, since 2×66836187606² (a number of 22 digits) contains 22 as substring.

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, 5569682295 + ... + 5569682306.

It is an arithmetic number, because the mean of its divisors is an integer number (16709046903).

Almost surely, 2^66836187606 is an apocalyptic number.

66836187606 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66836187606 is a wasteful number, since it uses less digits than its factorization.

66836187606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11139364606.

The product of its (nonzero) digits is 10450944, while the sum is 57.

The spelling of 66836187606 in words is "sixty-six billion, eight hundred thirty-six million, one hundred eighty-seven thousand, six hundred six".