8136645 has 24 divisors (see below), whose sum is σ = 14312928. Its totient is φ = 3944160.

The previous prime is 8136637. The next prime is 8136649. The reversal of 8136645 is 5466318.

It is not a de Polignac number, because 8136645 - 2³ = 8136637 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8136649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 427 + ... + 4056.

It is an arithmetic number, because the mean of its divisors is an integer number (596372).

Almost surely, 2^8136645 is an apocalyptic number.

It is an amenable number.

8136645 is a deficient number, since it is larger than the sum of its proper divisors (6176283).

8136645 is a wasteful number, since it uses less digits than its factorization.

8136645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4513 (or 4502 counting only the distinct ones).

The product of its digits is 17280, while the sum is 33.

The square root of 8136645 is about 2852.4804994951. The cubic root of 8136645 is about 201.1322858795.

The spelling of 8136645 in words is "eight million, one hundred thirty-six thousand, six hundred forty-five".