3657245 has 8 divisors (see below), whose sum is σ = 4428216. Its totient is φ = 2899456.

The previous prime is 3657239. The next prime is 3657259. The reversal of 3657245 is 5427563.

It can be written as a sum of positive squares in 4 ways, for example, as 111556 + 3545689 = 334^2 + 1883^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 3657245 - 2¹⁸ = 3395101 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 7 ways as a sum of consecutive naturals, for example, 2672 + ... + 3801.

It is an arithmetic number, because the mean of its divisors is an integer number (553527).

Almost surely, 2^3657245 is an apocalyptic number.

It is an amenable number.

3657245 is a deficient number, since it is larger than the sum of its proper divisors (770971).

3657245 is a wasteful number, since it uses less digits than its factorization.

3657245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6591.

The product of its digits is 25200, while the sum is 32.

The square root of 3657245 is about 1912.3924806378. The cubic root of 3657245 is about 154.0699771931.

The spelling of 3657245 in words is "three million, six hundred fifty-seven thousand, two hundred forty-five".