80666123 has 16 divisors (see below), whose sum is σ = 85349376. Its totient is φ = 76141920.

The previous prime is 80666111. The next prime is 80666141. The reversal of 80666123 is 32166608.

It is a cyclic number.

It is not a de Polignac number, because 80666123 - 2⁴ = 80666107 is a prime.

It is a super-2 number, since 2×80666123² = 13014046799702258, which contains 22 as substring.

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 80666123.

It is not an unprimeable number, because it can be changed into a prime (80666143) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 275165 + ... + 275457.

It is an arithmetic number, because the mean of its divisors is an integer number (5334336).

Almost surely, 2^80666123 is an apocalyptic number.

80666123 is a gapful number since it is divisible by the number (83) formed by its first and last digit.

80666123 is a deficient number, since it is larger than the sum of its proper divisors (4683253).

80666123 is a wasteful number, since it uses less digits than its factorization.

80666123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 514.

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 80666123 is about 8981.4321241103. The cubic root of 80666123 is about 432.0795660344.

The spelling of 80666123 in words is "eighty million, six hundred sixty-six thousand, one hundred twenty-three".