6681156 has 12 divisors (see below), whose sum is σ = 15589392. Its totient is φ = 2227048.

The previous prime is 6681139. The next prime is 6681161. The reversal of 6681156 is 6511866.

It is a tau number, because it is divible by the number of its divisors (12).

It is an Ulam number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 278370 + ... + 278393.

It is an arithmetic number, because the mean of its divisors is an integer number (1299116).

Almost surely, 2^6681156 is an apocalyptic number.

It is an amenable number.

6681156 is an abundant number, since it is smaller than the sum of its proper divisors (8908236).

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

6681156 is a wasteful number, since it uses less digits than its factorization.

6681156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 556770 (or 556768 counting only the distinct ones).

The product of its digits is 8640, while the sum is 33.

The square root of 6681156 is about 2584.7932219038. The cubic root of 6681156 is about 188.3434569614.

The spelling of 6681156 in words is "six million, six hundred eighty-one thousand, one hundred fifty-six".