3688541 has 4 divisors (see below), whose sum is σ = 3905532. Its totient is φ = 3471552.

The previous prime is 3688537. The next prime is 3688543. The reversal of 3688541 is 1458863.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1458863 = 7 ⋅208409.

It can be written as a sum of positive squares in 2 ways, for example, as 2627641 + 1060900 = 1621^2 + 1030^2 .

It is a cyclic number.

It is not a de Polignac number, because 3688541 - 2² = 3688537 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3688543) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 108470 + ... + 108503.

It is an arithmetic number, because the mean of its divisors is an integer number (976383).

Almost surely, 2^3688541 is an apocalyptic number.

It is an amenable number.

3688541 is a deficient number, since it is larger than the sum of its proper divisors (216991).

3688541 is a wasteful number, since it uses less digits than its factorization.

3688541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216990.

The product of its digits is 23040, while the sum is 35.

The square root of 3688541 is about 1920.5574711526. The cubic root of 3688541 is about 154.5082018945.

The spelling of 3688541 in words is "three million, six hundred eighty-eight thousand, five hundred forty-one".