3746581 has 2 divisors, whose sum is σ = 3746582. Its totient is φ = 3746580.

The previous prime is 3746563. The next prime is 3746593. The reversal of 3746581 is 1856473.

3746581 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2387025 + 1359556 = 1545^2 + 1166^2 .

It is a cyclic number.

It is not a de Polignac number, because 3746581 - 2⁵ = 3746549 is a prime.

It is a super-2 number, since 2×3746581² = 28073738379122, which contains 22 as substring.

It is an Ulam number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3746521) 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 as a sum of consecutive naturals, namely, 1873290 + 1873291.

It is an arithmetic number, because the mean of its divisors is an integer number (1873291).

Almost surely, 2^3746581 is an apocalyptic number.

It is an amenable number.

3746581 is a deficient number, since it is larger than the sum of its proper divisors (1).

3746581 is an equidigital number, since it uses as much as digits as its factorization.

3746581 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20160, while the sum is 34.

The square root of 3746581 is about 1935.6086897924. The cubic root of 3746581 is about 155.3143948167.

The spelling of 3746581 in words is "three million, seven hundred forty-six thousand, five hundred eighty-one".