3421781 has 8 divisors (see below), whose sum is σ = 3749664. Its totient is φ = 3096720.

The previous prime is 3421751. The next prime is 3421793. The reversal of 3421781 is 1871243.

3421781 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 not a de Polignac number, because 3421781 - 2¹⁴ = 3405397 is a prime.

It is a super-2 number, since 2×3421781² = 23417170423922, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3421781.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3421711) 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, 2486 + ... + 3608.

It is an arithmetic number, because the mean of its divisors is an integer number (468708).

Almost surely, 2^3421781 is an apocalyptic number.

It is an amenable number.

3421781 is a deficient number, since it is larger than the sum of its proper divisors (327883).

3421781 is a wasteful number, since it uses less digits than its factorization.

3421781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1411.

The product of its digits is 1344, while the sum is 26.

The square root of 3421781 is about 1849.8056654687. The cubic root of 3421781 is about 150.6898741455.

The spelling of 3421781 in words is "three million, four hundred twenty-one thousand, seven hundred eighty-one".