3631385 has 8 divisors (see below), whose sum is σ = 4417800. Its totient is φ = 2865024.

The previous prime is 3631379. The next prime is 3631423. The reversal of 3631385 is 5831363.

It can be written as a sum of positive squares in 4 ways, for example, as 322624 + 3308761 = 568^2 + 1819^2 .

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 3631385 - 2⁶ = 3631321 is a prime.

It is an Ulam number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4610 + ... + 5339.

It is an arithmetic number, because the mean of its divisors is an integer number (552225).

Almost surely, 2^3631385 is an apocalyptic number.

It is an amenable number.

3631385 is a deficient number, since it is larger than the sum of its proper divisors (786415).

3631385 is an equidigital number, since it uses as much as digits as its factorization.

3631385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10027.

The product of its digits is 6480, while the sum is 29.

The square root of 3631385 is about 1905.6193219004. The cubic root of 3631385 is about 153.7059803035.

The spelling of 3631385 in words is "three million, six hundred thirty-one thousand, three hundred eighty-five".