80666747 has 8 divisors (see below), whose sum is σ = 93753600. Its totient is φ = 67970664.

The previous prime is 80666741. The next prime is 80666759. The reversal of 80666747 is 74766608.

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

It is a cyclic number.

It is not a de Polignac number, because 80666747 - 2⁸ = 80666491 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 80666698 and 80666707.

It is not an unprimeable number, because it can be changed into a prime (80666741) 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, 97247 + ... + 98072.

It is an arithmetic number, because the mean of its divisors is an integer number (11719200).

Almost surely, 2^80666747 is an apocalyptic number.

80666747 is a deficient number, since it is larger than the sum of its proper divisors (13086853).

80666747 is a wasteful number, since it uses less digits than its factorization.

80666747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 195385.

The product of its (nonzero) digits is 338688, while the sum is 44.

The square root of 80666747 is about 8981.4668623783. The cubic root of 80666747 is about 432.0806801616.

The spelling of 80666747 in words is "eighty million, six hundred sixty-six thousand, seven hundred forty-seven".