3687505 has 4 divisors (see below), whose sum is σ = 4425012. Its totient is φ = 2950000.

The previous prime is 3687469. The next prime is 3687557. The reversal of 3687505 is 5057863.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2007889 + 1679616 = 1417^2 + 1296^2 .

It is a de Polignac number, because none of the positive numbers 2^k-3687505 is a prime.

It is a Duffinian number.

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, 368746 + ... + 368755.

It is an arithmetic number, because the mean of its divisors is an integer number (1106253).

Almost surely, 2^3687505 is an apocalyptic number.

It is an amenable number.

3687505 is a deficient number, since it is larger than the sum of its proper divisors (737507).

3687505 is an equidigital number, since it uses as much as digits as its factorization.

3687505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 737506.

The product of its (nonzero) digits is 25200, while the sum is 34.

The square root of 3687505 is about 1920.2877388558. The cubic root of 3687505 is about 154.4937349743.

The spelling of 3687505 in words is "three million, six hundred eighty-seven thousand, five hundred five".