80918785 has 8 divisors (see below), whose sum is σ = 97151040. Its totient is φ = 64702704.

The previous prime is 80918767. The next prime is 80918801. The reversal of 80918785 is 58781908.

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

It is a cyclic number.

It is not a de Polignac number, because 80918785 - 2¹³ = 80910593 is a prime.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 16084 + ... + 20506.

It is an arithmetic number, because the mean of its divisors is an integer number (12143880).

Almost surely, 2^80918785 is an apocalyptic number.

It is an amenable number.

80918785 is a deficient number, since it is larger than the sum of its proper divisors (16232255).

80918785 is a wasteful number, since it uses less digits than its factorization.

80918785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8087.

The product of its (nonzero) digits is 161280, while the sum is 46.

The square root of 80918785 is about 8995.4869240081. The cubic root of 80918785 is about 432.5302149584.

The spelling of 80918785 in words is "eighty million, nine hundred eighteen thousand, seven hundred eighty-five".