80186906 has 8 divisors (see below), whose sum is σ = 120368820. Its totient is φ = 40063968.

The previous prime is 80186891. The next prime is 80186917. The reversal of 80186906 is 60968108.

It can be written as a sum of positive squares in 2 ways, for example, as 75603025 + 4583881 = 8695^2 + 2141^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 80186906.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 11171 + ... + 16886.

Almost surely, 2^80186906 is an apocalyptic number.

80186906 is a deficient number, since it is larger than the sum of its proper divisors (40181914).

80186906 is a wasteful number, since it uses less digits than its factorization.

80186906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29488.

The product of its (nonzero) digits is 20736, while the sum is 38.

The square root of 80186906 is about 8954.7141774598. The cubic root of 80186906 is about 431.2222409914. Note that the first 4 decimals are identical.

The spelling of 80186906 in words is "eighty million, one hundred eighty-six thousand, nine hundred six".