6781542 has 8 divisors (see below), whose sum is σ = 13563096. Its totient is φ = 2260512.

The previous prime is 6781531. The next prime is 6781543. The reversal of 6781542 is 2451876.

It is a sphenic number, since it is the product of 3 distinct primes.

6781542 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6781543) 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, 565123 + ... + 565134.

It is an arithmetic number, because the mean of its divisors is an integer number (1695387).

Almost surely, 2^6781542 is an apocalyptic number.

6781542 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

6781542 is a wasteful number, since it uses less digits than its factorization.

6781542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1130262.

The product of its digits is 13440, while the sum is 33.

The square root of 6781542 is about 2604.1393971906. The cubic root of 6781542 is about 189.2820736997.

The spelling of 6781542 in words is "six million, seven hundred eighty-one thousand, five hundred forty-two".