3657545 has 4 divisors (see below), whose sum is σ = 4389060. Its totient is φ = 2926032.

The previous prime is 3657539. The next prime is 3657547. The reversal of 3657545 is 5457563.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5457563 = 499 ⋅10937.

It can be written as a sum of positive squares in 2 ways, for example, as 2849344 + 808201 = 1688^2 + 899^2 .

It is a cyclic number.

It is not a de Polignac number, because 3657545 - 2⁸ = 3657289 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3657547) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 365750 + ... + 365759.

It is an arithmetic number, because the mean of its divisors is an integer number (1097265).

Almost surely, 2^3657545 is an apocalyptic number.

It is an amenable number.

3657545 is a deficient number, since it is larger than the sum of its proper divisors (731515).

3657545 is an equidigital number, since it uses as much as digits as its factorization.

3657545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 731514.

The product of its digits is 63000, while the sum is 35.

The square root of 3657545 is about 1912.4709148115. The cubic root of 3657545 is about 154.0741898112.

The spelling of 3657545 in words is "three million, six hundred fifty-seven thousand, five hundred forty-five".