66667276666 has 8 divisors (see below), whose sum is σ = 100010056320. Its totient is φ = 33330591228.

The previous prime is 66667276657. The next prime is 66667276667.

66667276666 is nontrivially palindromic in base 10.

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

It is a junction number, because it is equal to n+sod(n) for n = 66667276598 and 66667276607.

It is not an unprimeable number, because it can be changed into a prime (66667276667) 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, 1496106 + ... + 1540021.

It is an arithmetic number, because the mean of its divisors is an integer number (12501257040).

Almost surely, 2^66667276666 is an apocalyptic number.

66667276666 is a deficient number, since it is larger than the sum of its proper divisors (33342779654).

66667276666 is a wasteful number, since it uses less digits than its factorization.

66667276666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3047108.

The product of its digits is 164602368, while the sum is 64.

The spelling of 66667276666 in words is "sixty-six billion, six hundred sixty-seven million, two hundred seventy-six thousand, six hundred sixty-six".