8135643 has 8 divisors (see below), whose sum is σ = 11099968. Its totient is φ = 5297544.

The previous prime is 8135641. The next prime is 8135713. The reversal of 8135643 is 3465318.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 8135643 - 2¹ = 8135641 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 15.

It is a self number, because there is not a number n which added to its sum of digits gives 8135643.

It is not an unprimeable number, because it can be changed into a prime (8135641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31405 + ... + 31662.

It is an arithmetic number, because the mean of its divisors is an integer number (1387496).

Almost surely, 2^8135643 is an apocalyptic number.

8135643 is a deficient number, since it is larger than the sum of its proper divisors (2964325).

8135643 is a wasteful number, since it uses less digits than its factorization.

8135643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63113.

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

The square root of 8135643 is about 2852.3048574793. The cubic root of 8135643 is about 201.1240292896.

It can be divided in two parts, 8135 and 643, that added together give a palindrome (8778).

The spelling of 8135643 in words is "eight million, one hundred thirty-five thousand, six hundred forty-three".