3670581 has 4 divisors (see below), whose sum is σ = 4894112. Its totient is φ = 2447052.

The previous prime is 3670571. The next prime is 3670603. The reversal of 3670581 is 1850763.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 3670581 - 2⁵ = 3670549 is a prime.

It is a super-2 number, since 2×3670581² = 26946329755122, which contains 22 as substring.

It is a D-number.

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 (3670561) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 611761 + ... + 611766.

It is an arithmetic number, because the mean of its divisors is an integer number (1223528).

Almost surely, 2^3670581 is an apocalyptic number.

It is an amenable number.

3670581 is a deficient number, since it is larger than the sum of its proper divisors (1223531).

3670581 is a wasteful number, since it uses less digits than its factorization.

3670581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1223530.

The product of its (nonzero) digits is 5040, while the sum is 30.

The square root of 3670581 is about 1915.8760398314. The cubic root of 3670581 is about 154.2570200655.

The spelling of 3670581 in words is "three million, six hundred seventy thousand, five hundred eighty-one".