8100645 has 32 divisors (see below), whose sum is σ = 14929920. Its totient is φ = 3673920.

The previous prime is 8100643. The next prime is 8100661. The reversal of 8100645 is 5460018.

It is not a de Polignac number, because 8100645 - 2¹ = 8100643 is a prime.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8100643) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18580 + ... + 19010.

It is an arithmetic number, because the mean of its divisors is an integer number (466560).

Almost surely, 2^8100645 is an apocalyptic number.

It is an amenable number.

8100645 is a deficient number, since it is larger than the sum of its proper divisors (6829275).

8100645 is a wasteful number, since it uses less digits than its factorization.

8100645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 625.

The product of its (nonzero) digits is 960, while the sum is 24.

The square root of 8100645 is about 2846.1632068453. The cubic root of 8100645 is about 200.8352155530.

The spelling of 8100645 in words is "eight million, one hundred thousand, six hundred forty-five".