8103645 has 80 divisors (see below), whose sum is σ = 16936128. Its totient is φ = 3663360.

The previous prime is 8103643. The next prime is 8103653. The reversal of 8103645 is 5463018.

8103645 is a `hidden beast` number, since 8 + 10 + 3 + 645 = 666.

It is not a de Polignac number, because 8103645 - 2¹ = 8103643 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

8103645 is a modest number, since divided by 3645 gives 810 as remainder.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8103643) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 75682 + ... + 75788.

Almost surely, 2^8103645 is an apocalyptic number.

8103645 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

It is an amenable number.

8103645 is an abundant number, since it is smaller than the sum of its proper divisors (8832483).

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

8103645 is a wasteful number, since it uses less digits than its factorization.

8103645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152 (or 143 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 8103645 is about 2846.6901833533. The cubic root of 8103645 is about 200.8600049899.

The spelling of 8103645 in words is "eight million, one hundred three thousand, six hundred forty-five".