3351681 has 6 divisors (see below), whose sum is σ = 4841330. Its totient is φ = 2234448.

The previous prime is 3351679. The next prime is 3351683. The reversal of 3351681 is 1861533.

It is an interprime number because it is at equal distance from previous prime (3351679) and next prime (3351683).

It can be written as a sum of positive squares in only one way, i.e., 1703025 + 1648656 = 1305^2 + 1284^2 .

It is not a de Polignac number, because 3351681 - 2¹ = 3351679 is a prime.

It is a super-2 number, since 2×3351681² = 22467531051522, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3351683) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 186196 + ... + 186213.

Almost surely, 2^3351681 is an apocalyptic number.

It is an amenable number.

3351681 is a deficient number, since it is larger than the sum of its proper divisors (1489649).

3351681 is a wasteful number, since it uses less digits than its factorization.

3351681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 372415 (or 372412 counting only the distinct ones).

The product of its digits is 2160, while the sum is 27.

The square root of 3351681 is about 1830.7596783849. The cubic root of 3351681 is about 149.6537346170.

It can be divided in two parts, 335 and 1681, that added together give a triangular number (2016 = T₆₃).

The spelling of 3351681 in words is "three million, three hundred fifty-one thousand, six hundred eighty-one".