80356689 has 12 divisors (see below), whose sum is σ = 132652416. Its totient is φ = 45918072.

The previous prime is 80356669. The next prime is 80356693. The reversal of 80356689 is 98665308.

80356689 is a `hidden beast` number, since 8 + 0 + 3 + 566 + 89 = 666.

It is not a de Polignac number, because 80356689 - 2¹⁵ = 80323921 is a prime.

It is a super-3 number, since 3×80356689³ (a number of 25 digits) contains 333 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (80356609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 637689 + ... + 637814.

It is an arithmetic number, because the mean of its divisors is an integer number (11054368).

Almost surely, 2^80356689 is an apocalyptic number.

It is an amenable number.

80356689 is a deficient number, since it is larger than the sum of its proper divisors (52295727).

80356689 is a wasteful number, since it uses less digits than its factorization.

80356689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1275516 (or 1275513 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 45.

The square root of 80356689 is about 8964.1892550303. The cubic root of 80356689 is about 431.5263745752.

The spelling of 80356689 in words is "eighty million, three hundred fifty-six thousand, six hundred eighty-nine".