6781436 has 24 divisors (see below), whose sum is σ = 12974976. Its totient is φ = 3087360.

The previous prime is 6781433. The next prime is 6781457. The reversal of 6781436 is 6341876.

It is an alternating number because its digits alternate between even and odd.

It is a junction number, because it is equal to n+sod(n) for n = 6781396 and 6781405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6781433) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 500 + ... + 3716.

It is an arithmetic number, because the mean of its divisors is an integer number (540624).

Almost surely, 2^6781436 is an apocalyptic number.

It is an amenable number.

6781436 is a deficient number, since it is larger than the sum of its proper divisors (6193540).

6781436 is a wasteful number, since it uses less digits than its factorization.

6781436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3269 (or 3267 counting only the distinct ones).

The product of its digits is 24192, while the sum is 35.

The square root of 6781436 is about 2604.1190448979. The cubic root of 6781436 is about 189.2810874931.

The spelling of 6781436 in words is "six million, seven hundred eighty-one thousand, four hundred thirty-six".