6536381 has 16 divisors (see below), whose sum is σ = 7280640. Its totient is φ = 5840640.

The previous prime is 6536377. The next prime is 6536389. The reversal of 6536381 is 1836356.

It is a cyclic number.

It is not a de Polignac number, because 6536381 - 2² = 6536377 is a prime.

It is a super-2 number, since 2×6536381² = 85448553154322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6536389) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41555 + ... + 41711.

It is an arithmetic number, because the mean of its divisors is an integer number (455040).

Almost surely, 2^6536381 is an apocalyptic number.

It is an amenable number.

6536381 is a deficient number, since it is larger than the sum of its proper divisors (744259).

6536381 is a wasteful number, since it uses less digits than its factorization.

6536381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 284.

The product of its digits is 12960, while the sum is 32.

The square root of 6536381 is about 2556.6347021035. The cubic root of 6536381 is about 186.9730961133.

The spelling of 6536381 in words is "six million, five hundred thirty-six thousand, three hundred eighty-one".