80666675 has 12 divisors (see below), whose sum is σ = 100138680. Its totient is φ = 64461120.

The previous prime is 80666671. The next prime is 80666687. The reversal of 80666675 is 57666608.

It is not a de Polignac number, because 80666675 - 2² = 80666671 is a prime.

It is a super-2 number, since 2×80666675² = 13014224911111250, which contains 22 as substring.

It is a hoax number, since the sum of its digits (44) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (80666671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 39479 + ... + 41471.

It is an arithmetic number, because the mean of its divisors is an integer number (8344890).

Almost surely, 2^80666675 is an apocalyptic number.

80666675 is a deficient number, since it is larger than the sum of its proper divisors (19472005).

80666675 is a wasteful number, since it uses less digits than its factorization.

80666675 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3622 (or 3617 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 44.

The square root of 80666675 is about 8981.4628541235. The cubic root of 80666675 is about 432.0805516088.

It can be divided in two parts, 8066 and 6675, that added together give a palindrome (14741).

The spelling of 80666675 in words is "eighty million, six hundred sixty-six thousand, six hundred seventy-five".