581691013 has 8 divisors (see below), whose sum is σ = 584719520. Its totient is φ = 578670480.

The previous prime is 581690981. The next prime is 581691029. The reversal of 581691013 is 310196185.

581691013 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 581691013 - 2⁵ = 581690981 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 581691013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (581691043) 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, 188503 + ... + 191563.

It is an arithmetic number, because the mean of its divisors is an integer number (73089940).

Almost surely, 2^581691013 is an apocalyptic number.

It is an amenable number.

581691013 is a deficient number, since it is larger than the sum of its proper divisors (3028507).

581691013 is a wasteful number, since it uses less digits than its factorization.

581691013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3987.

The product of its (nonzero) digits is 6480, while the sum is 34.

The square root of 581691013 is about 24118.2713518196. The cubic root of 581691013 is about 834.7647815349.

The spelling of 581691013 in words is "five hundred eighty-one million, six hundred ninety-one thousand, thirteen".