3631545 has 12 divisors (see below), whose sum is σ = 6294756. Its totient is φ = 1936800.

The previous prime is 3631543. The next prime is 3631561. The reversal of 3631545 is 5451363.

It can be written as a sum of positive squares in 2 ways, for example, as 2013561 + 1617984 = 1419^2 + 1272^2 .

It is not a de Polignac number, because 3631545 - 2¹ = 3631543 is a prime.

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (3631541) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 40306 + ... + 40395.

It is an arithmetic number, because the mean of its divisors is an integer number (524563).

Almost surely, 2^3631545 is an apocalyptic number.

It is an amenable number.

3631545 is a deficient number, since it is larger than the sum of its proper divisors (2663211).

3631545 is a wasteful number, since it uses less digits than its factorization.

3631545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80712 (or 80709 counting only the distinct ones).

The product of its digits is 5400, while the sum is 27.

The square root of 3631545 is about 1905.6613025404. The cubic root of 3631545 is about 153.7082377155.

The spelling of 3631545 in words is "three million, six hundred thirty-one thousand, five hundred forty-five".