3641540 has 72 divisors (see below), whose sum is σ = 9455040. Its totient is φ = 1150848.

The previous prime is 3641537. The next prime is 3641549. The reversal of 3641540 is 451463.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (3641549) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 98402 + ... + 98438.

It is an arithmetic number, because the mean of its divisors is an integer number (131320).

Almost surely, 2^3641540 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3641540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4727520).

3641540 is an abundant number, since it is smaller than the sum of its proper divisors (5813500).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3641540 is a wasteful number, since it uses less digits than its factorization.

3641540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109 (or 70 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 3641540 is about 1908.2819498177. The cubic root of 3641540 is about 153.8491241734.

The spelling of 3641540 in words is "three million, six hundred forty-one thousand, five hundred forty".