66000724763 has 4 divisors (see below), whose sum is σ = 66002806488. Its totient is φ = 65998643040.

The previous prime is 66000724759. The next prime is 66000724793. The reversal of 66000724763 is 36742700066.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 66000724763 - 2² = 66000724759 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 66000724763.

It is not an unprimeable number, because it can be changed into a prime (66000724703) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 992558 + ... + 1056963.

It is an arithmetic number, because the mean of its divisors is an integer number (16500701622).

Almost surely, 2^66000724763 is an apocalyptic number.

66000724763 is a deficient number, since it is larger than the sum of its proper divisors (2081725).

66000724763 is a wasteful number, since it uses less digits than its factorization.

66000724763 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2081724.

The product of its (nonzero) digits is 254016, while the sum is 41.

The spelling of 66000724763 in words is "sixty-six billion, seven hundred twenty-four thousand, seven hundred sixty-three".