8133645 has 32 divisors (see below), whose sum is σ = 14297472. Its totient is φ = 3923712.

The previous prime is 8133641. The next prime is 8133707. The reversal of 8133645 is 5463318.

It is not a de Polignac number, because 8133645 - 2² = 8133641 is a prime.

It is a super-3 number, since 3×8133645³ (a number of 22 digits) contains 333 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8133641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9942 + ... + 10728.

It is an arithmetic number, because the mean of its divisors is an integer number (446796).

Almost surely, 2^8133645 is an apocalyptic number.

It is an amenable number.

8133645 is a deficient number, since it is larger than the sum of its proper divisors (6163827).

8133645 is a wasteful number, since it uses less digits than its factorization.

8133645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 861.

The product of its digits is 8640, while the sum is 30.

The square root of 8133645 is about 2851.9545929064. The cubic root of 8133645 is about 201.1075635265.

It can be divided in two parts, 8133 and 645, that added together give a palindrome (8778).

The spelling of 8133645 in words is "eight million, one hundred thirty-three thousand, six hundred forty-five".