3874581 has 8 divisors (see below), whose sum is σ = 5740160. Its totient is φ = 2583036.

The previous prime is 3874579. The next prime is 3874583. The reversal of 3874581 is 1854783.

3874581 is a `hidden beast` number, since 3 + 8 + 74 + 581 = 666.

It is an interprime number because it is at equal distance from previous prime (3874579) and next prime (3874583).

It is not a de Polignac number, because 3874581 - 2¹ = 3874579 is a prime.

It is a super-2 number, since 2×3874581² = 30024755851122, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3874583) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71725 + ... + 71778.

It is an arithmetic number, because the mean of its divisors is an integer number (717520).

Almost surely, 2^3874581 is an apocalyptic number.

It is an amenable number.

3874581 is a deficient number, since it is larger than the sum of its proper divisors (1865579).

3874581 is a wasteful number, since it uses less digits than its factorization.

3874581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143512 (or 143506 counting only the distinct ones).

The product of its digits is 26880, while the sum is 36.

The square root of 3874581 is about 1968.3955395194. The cubic root of 3874581 is about 157.0633711747.

The spelling of 3874581 in words is "three million, eight hundred seventy-four thousand, five hundred eighty-one".