3719561 has 8 divisors (see below), whose sum is σ = 3835944. Its totient is φ = 3604480.

The previous prime is 3719539. The next prime is 3719563. The reversal of 3719561 is 1659173.

It can be written as a sum of positive squares in 4 ways, for example, as 547600 + 3171961 = 740^2 + 1781^2 .

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 3719561 - 2¹⁸ = 3457417 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3719563) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10361 + ... + 10713.

It is an arithmetic number, because the mean of its divisors is an integer number (479493).

Almost surely, 2^3719561 is an apocalyptic number.

It is an amenable number.

3719561 is a deficient number, since it is larger than the sum of its proper divisors (116383).

3719561 is a wasteful number, since it uses less digits than its factorization.

3719561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 651.

The product of its digits is 5670, while the sum is 32.

The square root of 3719561 is about 1928.6163433923. The cubic root of 3719561 is about 154.9401225535.

The spelling of 3719561 in words is "three million, seven hundred nineteen thousand, five hundred sixty-one".