3634581 has 8 divisors (see below), whose sum is σ = 4937760. Its totient is φ = 2377232.

The previous prime is 3634571. The next prime is 3634591. The reversal of 3634581 is 1854363.

It is an interprime number because it is at equal distance from previous prime (3634571) and next prime (3634591).

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 3634581 - 2¹⁷ = 3503509 is a prime.

It is a super-2 number, since 2×3634581² = 26420358091122, 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 (3634511) 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, 11271 + ... + 11588.

It is an arithmetic number, because the mean of its divisors is an integer number (617220).

Almost surely, 2^3634581 is an apocalyptic number.

It is an amenable number.

3634581 is a deficient number, since it is larger than the sum of its proper divisors (1303179).

3634581 is a wasteful number, since it uses less digits than its factorization.

3634581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22915.

The product of its digits is 8640, while the sum is 30.

The square root of 3634581 is about 1906.4577099952. The cubic root of 3634581 is about 153.7510595472.

The spelling of 3634581 in words is "three million, six hundred thirty-four thousand, five hundred eighty-one".