3687725 has 12 divisors (see below), whose sum is σ = 4842324. Its totient is φ = 2776320.

The previous prime is 3687713. The next prime is 3687731. The reversal of 3687725 is 5277863.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 51076 + 3636649 = 226^2 + 1907^2 .

It is not a de Polignac number, because 3687725 - 2⁸ = 3687469 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3914 + ... + 4763.

It is an arithmetic number, because the mean of its divisors is an integer number (403527).

Almost surely, 2^3687725 is an apocalyptic number.

It is an amenable number.

3687725 is a deficient number, since it is larger than the sum of its proper divisors (1154599).

3687725 is a wasteful number, since it uses less digits than its factorization.

3687725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8704 (or 8699 counting only the distinct ones).

The product of its digits is 70560, while the sum is 38.

The square root of 3687725 is about 1920.3450210835. The cubic root of 3687725 is about 154.4968073268.

The spelling of 3687725 in words is "three million, six hundred eighty-seven thousand, seven hundred twenty-five".