3427781 has 8 divisors (see below), whose sum is σ = 3943680. Its totient is φ = 2918448.

The previous prime is 3427777. The next prime is 3427783. The reversal of 3427781 is 1877243.

It is a happy number.

3427781 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 3427781 - 2² = 3427777 is a prime.

It is a super-2 number, since 2×3427781² = 23499365167922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3427783) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 461 + ... + 2658.

It is an arithmetic number, because the mean of its divisors is an integer number (492960).

Almost surely, 2^3427781 is an apocalyptic number.

It is an amenable number.

3427781 is a deficient number, since it is larger than the sum of its proper divisors (515899).

3427781 is a wasteful number, since it uses less digits than its factorization.

3427781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3283.

The product of its digits is 9408, while the sum is 32.

The square root of 3427781 is about 1851.4267471331. The cubic root of 3427781 is about 150.7778995819. Note that the first 3 decimals are identical.

The spelling of 3427781 in words is "three million, four hundred twenty-seven thousand, seven hundred eighty-one".