3652581 has 8 divisors (see below), whose sum is σ = 4929120. Its totient is φ = 2405552.

The previous prime is 3652573. The next prime is 3652589. The reversal of 3652581 is 1852563.

It is an interprime number because it is at equal distance from previous prime (3652573) and next prime (3652589).

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

It is a cyclic number.

It is not a de Polignac number, because 3652581 - 2³ = 3652573 is a prime.

It is a super-2 number, since 2×3652581² = 26682695923122, which contains 22 as substring.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3652589) 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, 7086 + ... + 7583.

It is an arithmetic number, because the mean of its divisors is an integer number (616140).

Almost surely, 2^3652581 is an apocalyptic number.

It is an amenable number.

3652581 is a deficient number, since it is larger than the sum of its proper divisors (1276539).

3652581 is a wasteful number, since it uses less digits than its factorization.

3652581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14755.

The product of its digits is 7200, while the sum is 30.

The square root of 3652581 is about 1911.1726766569. The cubic root of 3652581 is about 154.0044553723.

The spelling of 3652581 in words is "three million, six hundred fifty-two thousand, five hundred eighty-one".