80860666 has 8 divisors (see below), whose sum is σ = 121557780. Its totient is φ = 40341408.

The previous prime is 80860657. The next prime is 80860673. The reversal of 80860666 is 66606808.

It can be written as a sum of positive squares in 2 ways, for example, as 64336441 + 16524225 = 8021^2 + 4065^2 .

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

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, 43321 + ... + 45148.

Almost surely, 2^80860666 is an apocalyptic number.

80860666 is a deficient number, since it is larger than the sum of its proper divisors (40697114).

80860666 is a wasteful number, since it uses less digits than its factorization.

80860666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88928.

The product of its (nonzero) digits is 82944, while the sum is 40.

The square root of 80860666 is about 8992.2558904871. The cubic root of 80860666 is about 432.4266368486.

The spelling of 80860666 in words is "eighty million, eight hundred sixty thousand, six hundred sixty-six".