80899687 has 8 divisors (see below), whose sum is σ = 89129232. Its totient is φ = 72816000.

The previous prime is 80899673. The next prime is 80899703. The reversal of 80899687 is 78699808.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-80899687 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80899607) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35298 + ... + 37519.

It is an arithmetic number, because the mean of its divisors is an integer number (11141154).

Almost surely, 2^80899687 is an apocalyptic number.

80899687 is a deficient number, since it is larger than the sum of its proper divisors (8229545).

80899687 is a wasteful number, since it uses less digits than its factorization.

80899687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72929.

The product of its (nonzero) digits is 1741824, while the sum is 55.

The square root of 80899687 is about 8994.4253290580. The cubic root of 80899687 is about 432.4961844919.

The spelling of 80899687 in words is "eighty million, eight hundred ninety-nine thousand, six hundred eighty-seven".