6631436 has 36 divisors (see below), whose sum is σ = 13709808. Its totient is φ = 2749248.

The previous prime is 6631421. The next prime is 6631447. The reversal of 6631436 is 6341366.

It is a junction number, because it is equal to n+sod(n) for n = 6631399 and 6631408.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 38246 + ... + 38418.

It is an arithmetic number, because the mean of its divisors is an integer number (380828).

Almost surely, 2^6631436 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6631436, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6854904).

6631436 is an abundant number, since it is smaller than the sum of its proper divisors (7078372).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6631436 is a wasteful number, since it uses less digits than its factorization.

6631436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258 (or 219 counting only the distinct ones).

The product of its digits is 7776, while the sum is 29.

The square root of 6631436 is about 2575.1574709132. The cubic root of 6631436 is about 187.8750867821.

The spelling of 6631436 in words is "six million, six hundred thirty-one thousand, four hundred thirty-six".