80208985 has 4 divisors (see below), whose sum is σ = 96250788. Its totient is φ = 64167184.

The previous prime is 80208967. The next prime is 80209021. The reversal of 80208985 is 58980208.

80208985 = T₇₃₁₁ + T₇₃₁₂ + T₇₃₁₃.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 34727449 + 45481536 = 5893^2 + 6744^2 .

It is a cyclic number.

It is not a de Polignac number, because 80208985 - 2¹¹ = 80206937 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8020894 + ... + 8020903.

It is an arithmetic number, because the mean of its divisors is an integer number (24062697).

Almost surely, 2^80208985 is an apocalyptic number.

80208985 is the 7313-rd centered triangular number.

It is an amenable number.

80208985 is a deficient number, since it is larger than the sum of its proper divisors (16041803).

80208985 is a wasteful number, since it uses less digits than its factorization.

80208985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16041802.

The product of its (nonzero) digits is 46080, while the sum is 40.

The square root of 80208985 is about 8955.9469069440. The cubic root of 80208985 is about 431.2618155413.

The spelling of 80208985 in words is "eighty million, two hundred eight thousand, nine hundred eighty-five".