3870581 has 8 divisors (see below), whose sum is σ = 4547424. Its totient is φ = 3247920.

The previous prime is 3870563. The next prime is 3870599. The reversal of 3870581 is 1850783.

It is an interprime number because it is at equal distance from previous prime (3870563) and next prime (3870599).

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

It is not a de Polignac number, because 3870581 - 2¹⁴ = 3854197 is a prime.

It is a super-2 number, since 2×3870581² = 29962794555122, 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 Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3870551) 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, 13391 + ... + 13676.

It is an arithmetic number, because the mean of its divisors is an integer number (568428).

Almost surely, 2^3870581 is an apocalyptic number.

It is an amenable number.

3870581 is a deficient number, since it is larger than the sum of its proper divisors (676843).

3870581 is a wasteful number, since it uses less digits than its factorization.

3870581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27091.

The product of its (nonzero) digits is 6720, while the sum is 32.

The square root of 3870581 is about 1967.3792211976. The cubic root of 3870581 is about 157.0093034096.

The spelling of 3870581 in words is "three million, eight hundred seventy thousand, five hundred eighty-one".