3745581 has 8 divisors (see below), whose sum is σ = 5707584. Its totient is φ = 2140320.

The previous prime is 3745543. The next prime is 3745589. The reversal of 3745581 is 1855473.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 3745581 - 2⁷ = 3745453 is a prime.

It is a super-2 number, since 2×3745581² = 28058754055122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3745589) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 89160 + ... + 89201.

It is an arithmetic number, because the mean of its divisors is an integer number (713448).

Almost surely, 2^3745581 is an apocalyptic number.

It is an amenable number.

3745581 is a deficient number, since it is larger than the sum of its proper divisors (1962003).

3745581 is a wasteful number, since it uses less digits than its factorization.

3745581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178371.

The product of its digits is 16800, while the sum is 33.

The square root of 3745581 is about 1935.3503558787. The cubic root of 3745581 is about 155.3005752645.

The spelling of 3745581 in words is "three million, seven hundred forty-five thousand, five hundred eighty-one".