6436169 has 4 divisors (see below), whose sum is σ = 6442260. Its totient is φ = 6430080.

The previous prime is 6436153. The next prime is 6436201. The reversal of 6436169 is 9616346.

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 506944 + 5929225 = 712^2 + 2435^2 .

It is a cyclic number.

It is not a de Polignac number, because 6436169 - 2⁴ = 6436153 is a prime.

It is a super-2 number, since 2×6436169² = 82848542793122, which contains 22 as substring.

It is a Duffinian number.

It is a plaindrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (6436769) 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, 1004 + ... + 3725.

It is an arithmetic number, because the mean of its divisors is an integer number (1610565).

Almost surely, 2^6436169 is an apocalyptic number.

It is an amenable number.

6436169 is a deficient number, since it is larger than the sum of its proper divisors (6091).

6436169 is a wasteful number, since it uses less digits than its factorization.

6436169 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6090.

The product of its digits is 23328, while the sum is 35.

The square root of 6436169 is about 2536.9605830600. The cubic root of 6436169 is about 186.0126499278.

The spelling of 6436169 in words is "six million, four hundred thirty-six thousand, one hundred sixty-nine".