3427681 has 4 divisors (see below), whose sum is σ = 3431700. Its totient is φ = 3423664.

The previous prime is 3427673. The next prime is 3427687. The reversal of 3427681 is 1867243.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 2944656 + 483025 = 1716^2 + 695^2 .

It is a cyclic number.

It is not a de Polignac number, because 3427681 - 2³ = 3427673 is a prime.

It is a super-2 number, since 2×3427681² = 23497994075522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3427687) 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, 166 + ... + 2623.

It is an arithmetic number, because the mean of its divisors is an integer number (857925).

Almost surely, 2^3427681 is an apocalyptic number.

It is an amenable number.

3427681 is a deficient number, since it is larger than the sum of its proper divisors (4019).

3427681 is a wasteful number, since it uses less digits than its factorization.

3427681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4018.

The product of its digits is 8064, while the sum is 31.

The square root of 3427681 is about 1851.3997407367. The cubic root of 3427681 is about 150.7764333334.

The spelling of 3427681 in words is "three million, four hundred twenty-seven thousand, six hundred eighty-one".