8100985 has 16 divisors (see below), whose sum is σ = 10200960. Its totient is φ = 6168960.

The previous prime is 8100979. The next prime is 8101019. The reversal of 8100985 is 5890018.

It is not a de Polignac number, because 8100985 - 2³ = 8100977 is a prime.

It is an Ulam number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8356 + ... + 9274.

It is an arithmetic number, because the mean of its divisors is an integer number (637560).

Almost surely, 2^8100985 is an apocalyptic number.

It is an amenable number.

8100985 is a deficient number, since it is larger than the sum of its proper divisors (2099975).

8100985 is a wasteful number, since it uses less digits than its factorization.

8100985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1008.

The product of its (nonzero) digits is 2880, while the sum is 31.

The square root of 8100985 is about 2846.2229357519. Note that the first 3 decimals coincide. The cubic root of 8100985 is about 200.8380253299.

The spelling of 8100985 in words is "eight million, one hundred thousand, nine hundred eighty-five".