3703561 has 4 divisors (see below), whose sum is σ = 3831300. Its totient is φ = 3575824.

The previous prime is 3703549. The next prime is 3703597. The reversal of 3703561 is 1653073.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1653073 = 181 ⋅9133.

It can be written as a sum of positive squares in 2 ways, for example, as 1690000 + 2013561 = 1300^2 + 1419^2 .

It is a cyclic number.

It is not a de Polignac number, because 3703561 - 2¹¹ = 3701513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3703061) 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, 63826 + ... + 63883.

It is an arithmetic number, because the mean of its divisors is an integer number (957825).

Almost surely, 2^3703561 is an apocalyptic number.

It is an amenable number.

3703561 is a deficient number, since it is larger than the sum of its proper divisors (127739).

3703561 is a wasteful number, since it uses less digits than its factorization.

3703561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127738.

The product of its (nonzero) digits is 1890, while the sum is 25.

The square root of 3703561 is about 1924.4638214318. The cubic root of 3703561 is about 154.7176406458.

The spelling of 3703561 in words is "three million, seven hundred three thousand, five hundred sixty-one".