3640541 has 8 divisors (see below), whose sum is σ = 3802584. Its totient is φ = 3481920.

The previous prime is 3640537. The next prime is 3640543. The reversal of 3640541 is 1450463.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 504100 + 3136441 = 710^2 + 1771^2 .

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 3640541 - 2² = 3640537 is a prime.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3640543) 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, 1451 + ... + 3063.

It is an arithmetic number, because the mean of its divisors is an integer number (475323).

Almost surely, 2^3640541 is an apocalyptic number.

It is an amenable number.

3640541 is a deficient number, since it is larger than the sum of its proper divisors (162043).

3640541 is a wasteful number, since it uses less digits than its factorization.

3640541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1711.

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

The square root of 3640541 is about 1908.0201780904. The cubic root of 3640541 is about 153.8350541800.

The spelling of 3640541 in words is "three million, six hundred forty thousand, five hundred forty-one".