3400681 has 2 divisors, whose sum is σ = 3400682. Its totient is φ = 3400680.

The previous prime is 3400673. The next prime is 3400693. The reversal of 3400681 is 1860043.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2277081 + 1123600 = 1509^2 + 1060^2 .

It is a cyclic number.

It is not a de Polignac number, because 3400681 - 2³ = 3400673 is a prime.

It is a super-2 number, since 2×3400681² = 23129262527522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (3403681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1700340 + 1700341.

It is an arithmetic number, because the mean of its divisors is an integer number (1700341).

Almost surely, 2^3400681 is an apocalyptic number.

It is an amenable number.

3400681 is a deficient number, since it is larger than the sum of its proper divisors (1).

3400681 is an equidigital number, since it uses as much as digits as its factorization.

3400681 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 3400681 is about 1844.0935442650. The cubic root of 3400681 is about 150.3794983230.

The spelling of 3400681 in words is "three million, four hundred thousand, six hundred eighty-one".