3681530 has 8 divisors (see below), whose sum is σ = 6626772. Its totient is φ = 1472608.

The previous prime is 3681527. The next prime is 3681553. The reversal of 3681530 is 351863.

It can be written as a sum of positive squares in 2 ways, for example, as 3644281 + 37249 = 1909^2 + 193^2 .

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

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 3681530.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 184067 + ... + 184086.

Almost surely, 2^3681530 is an apocalyptic number.

3681530 is a deficient number, since it is larger than the sum of its proper divisors (2945242).

3681530 is a wasteful number, since it uses less digits than its factorization.

3681530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 368160.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 3681530 is about 1918.7313517009. The cubic root of 3681530 is about 154.4102459039.

The spelling of 3681530 in words is "three million, six hundred eighty-one thousand, five hundred thirty".