3716561 has 4 divisors (see below), whose sum is σ = 3724800. Its totient is φ = 3708324.

The previous prime is 3716543. The next prime is 3716567. The reversal of 3716561 is 1656173.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3716561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3716567) 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, 3401 + ... + 4358.

It is an arithmetic number, because the mean of its divisors is an integer number (931200).

Almost surely, 2^3716561 is an apocalyptic number.

It is an amenable number.

3716561 is a deficient number, since it is larger than the sum of its proper divisors (8239).

3716561 is an equidigital number, since it uses as much as digits as its factorization.

3716561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8238.

The product of its digits is 3780, while the sum is 29.

The square root of 3716561 is about 1927.8384268398. The cubic root of 3716561 is about 154.8984558631.

The spelling of 3716561 in words is "three million, seven hundred sixteen thousand, five hundred sixty-one".