8641013 has 4 divisors (see below), whose sum is σ = 8647020. Its totient is φ = 8635008.

The previous prime is 8641007. The next prime is 8641063. The reversal of 8641013 is 3101468.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 677329 + 7963684 = 823^2 + 2822^2 .

It is a cyclic number.

It is not a de Polignac number, because 8641013 - 2⁶ = 8640949 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 8641013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8641063) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 581 + ... + 4197.

It is an arithmetic number, because the mean of its divisors is an integer number (2161755).

Almost surely, 2^8641013 is an apocalyptic number.

It is an amenable number.

8641013 is a deficient number, since it is larger than the sum of its proper divisors (6007).

8641013 is a wasteful number, since it uses less digits than its factorization.

8641013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6006.

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 8641013 is about 2939.5600010886. The cubic root of 8641013 is about 205.2051327583.

The spelling of 8641013 in words is "eight million, six hundred forty-one thousand, thirteen".