80818585 has 16 divisors (see below), whose sum is σ = 99792000. Its totient is φ = 62796160.

The previous prime is 80818541. The next prime is 80818589. The reversal of 80818585 is 58581808.

It is not a de Polignac number, because 80818585 - 2¹³ = 80810393 is a prime.

It is not an unprimeable number, because it can be changed into a prime (80818589) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53166 + ... + 54664.

It is an arithmetic number, because the mean of its divisors is an integer number (6237000).

Almost surely, 2^80818585 is an apocalyptic number.

It is an amenable number.

80818585 is a deficient number, since it is larger than the sum of its proper divisors (18973415).

80818585 is a wasteful number, since it uses less digits than its factorization.

80818585 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1808.

The product of its (nonzero) digits is 102400, while the sum is 43.

The square root of 80818585 is about 8989.9157393159. The cubic root of 80818585 is about 432.3516102473.

The spelling of 80818585 in words is "eighty million, eight hundred eighteen thousand, five hundred eighty-five".