3666725 has 6 divisors (see below), whose sum is σ = 4546770. Its totient is φ = 2933360.

The previous prime is 3666703. The next prime is 3666727. The reversal of 3666725 is 5276663.

It can be written as a sum of positive squares in 3 ways, for example, as 343396 + 3323329 = 586^2 + 1823^2 .

It is not a de Polignac number, because 3666725 - 2⁶ = 3666661 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3666727) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 73310 + ... + 73359.

It is an arithmetic number, because the mean of its divisors is an integer number (757795).

Almost surely, 2^3666725 is an apocalyptic number.

It is an amenable number.

3666725 is a deficient number, since it is larger than the sum of its proper divisors (880045).

3666725 is a wasteful number, since it uses less digits than its factorization.

3666725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146679 (or 146674 counting only the distinct ones).

The product of its digits is 45360, while the sum is 35.

The square root of 3666725 is about 1914.8694472470. The cubic root of 3666725 is about 154.2029847072.

The spelling of 3666725 in words is "three million, six hundred sixty-six thousand, seven hundred twenty-five".