3561406613 has 4 divisors (see below), whose sum is σ = 3567352800. Its totient is φ = 3555460428.

The previous prime is 3561406609. The next prime is 3561406633. The reversal of 3561406613 is 3166041653.

3561406613 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 not a de Polignac number, because 3561406613 - 2² = 3561406609 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3561406633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2972195 + ... + 2973392.

It is an arithmetic number, because the mean of its divisors is an integer number (891838200).

Almost surely, 2^3561406613 is an apocalyptic number.

It is an amenable number.

3561406613 is a deficient number, since it is larger than the sum of its proper divisors (5946187).

3561406613 is an equidigital number, since it uses as much as digits as its factorization.

3561406613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5946186.

The product of its (nonzero) digits is 38880, while the sum is 35.

The square root of 3561406613 is about 59677.5218403043. The cubic root of 3561406613 is about 1527.1224215082.

The spelling of 3561406613 in words is "three billion, five hundred sixty-one million, four hundred six thousand, six hundred thirteen".