80165000 has 40 divisors (see below), whose sum is σ = 187838310. Its totient is φ = 32064000.

The previous prime is 80164999. The next prime is 80165017. The reversal of 80165000 is 56108.

It can be written as a sum of positive squares in 5 ways, for example, as 5134756 + 75030244 = 2266^2 + 8662^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a hoax number, since the sum of its digits (20) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

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 9 ways as a sum of consecutive naturals, for example, 3017 + ... + 13016.

Almost surely, 2^80165000 is an apocalyptic number.

It is an amenable number.

80165000 is an abundant number, since it is smaller than the sum of its proper divisors (107673310).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

80165000 is a wasteful number, since it uses less digits than its factorization.

80165000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16059 (or 16040 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 20.

The square root of 80165000 is about 8953.4909392929. The cubic root of 80165000 is about 431.1829693479.

The spelling of 80165000 in words is "eighty million, one hundred sixty-five thousand".