3656541 has 8 divisors (see below), whose sum is σ = 5571904. Its totient is φ = 2089440.

The previous prime is 3656539. The next prime is 3656551. The reversal of 3656541 is 1456563.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 3656541 - 2¹ = 3656539 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a Curzon number.

3656541 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 3656499 and 3656508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3656551) 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, 87040 + ... + 87081.

It is an arithmetic number, because the mean of its divisors is an integer number (696488).

Almost surely, 2^3656541 is an apocalyptic number.

It is an amenable number.

3656541 is a deficient number, since it is larger than the sum of its proper divisors (1915363).

3656541 is a wasteful number, since it uses less digits than its factorization.

3656541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174131.

The product of its digits is 10800, while the sum is 30.

The square root of 3656541 is about 1912.2084091437. The cubic root of 3656541 is about 154.0600906779.

The spelling of 3656541 in words is "three million, six hundred fifty-six thousand, five hundred forty-one".