3403681 has 2 divisors, whose sum is σ = 3403682. Its totient is φ = 3403680.

The previous prime is 3403663. The next prime is 3403703. The reversal of 3403681 is 1863043.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3389281 + 14400 = 1841^2 + 120^2 .

It is a cyclic number.

It is not a de Polignac number, because 3403681 - 2¹³ = 3395489 is a prime.

It is a super-2 number, since 2×3403681² = 23170088699522, which contains 22 as substring.

3403681 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (3403601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1701840 + 1701841.

It is an arithmetic number, because the mean of its divisors is an integer number (1701841).

Almost surely, 2^3403681 is an apocalyptic number.

It is an amenable number.

3403681 is a deficient number, since it is larger than the sum of its proper divisors (1).

3403681 is an equidigital number, since it uses as much as digits as its factorization.

3403681 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 3403681 is about 1844.9067727124. The cubic root of 3403681 is about 150.4237057331.

The spelling of 3403681 in words is "three million, four hundred three thousand, six hundred eighty-one".