3657725 has 6 divisors (see below), whose sum is σ = 4535610. Its totient is φ = 2926160.

The previous prime is 3657691. The next prime is 3657749. The reversal of 3657725 is 5277563.

It can be written as a sum of positive squares in 3 ways, for example, as 521284 + 3136441 = 722^2 + 1771^2 .

It is a de Polignac number, because none of the positive numbers 2^k-3657725 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 73130 + ... + 73179.

It is an arithmetic number, because the mean of its divisors is an integer number (755935).

Almost surely, 2^3657725 is an apocalyptic number.

It is an amenable number.

3657725 is a deficient number, since it is larger than the sum of its proper divisors (877885).

3657725 is a wasteful number, since it uses less digits than its factorization.

3657725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146319 (or 146314 counting only the distinct ones).

The product of its digits is 44100, while the sum is 35.

The square root of 3657725 is about 1912.5179737717. The cubic root of 3657725 is about 154.0767172714.

The spelling of 3657725 in words is "three million, six hundred fifty-seven thousand, seven hundred twenty-five".