6536631 has 4 divisors (see below), whose sum is σ = 8715512. Its totient is φ = 4357752.

The previous prime is 6536617. The next prime is 6536633. The reversal of 6536631 is 1366356.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 6536631 - 2⁷ = 6536503 is a prime.

It is a super-2 number, since 2×6536631² = 85455089660322, which contains 22 as substring.

It is a D-number.

It is a Duffinian number.

6536631 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6536633) 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, 1089436 + ... + 1089441.

It is an arithmetic number, because the mean of its divisors is an integer number (2178878).

Almost surely, 2^6536631 is an apocalyptic number.

6536631 is a deficient number, since it is larger than the sum of its proper divisors (2178881).

6536631 is a wasteful number, since it uses less digits than its factorization.

6536631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2178880.

The product of its digits is 9720, while the sum is 30.

The square root of 6536631 is about 2556.6835940335. The cubic root of 6536631 is about 186.9754798318.

The spelling of 6536631 in words is "six million, five hundred thirty-six thousand, six hundred thirty-one".