581361406 has 8 divisors (see below), whose sum is σ = 872965800. Its totient is φ = 290372808.

The previous prime is 581361401. The next prime is 581361421. The reversal of 581361406 is 604163185.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (581361401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 151581 + ... + 155368.

It is an arithmetic number, because the mean of its divisors is an integer number (109120725).

Almost surely, 2^581361406 is an apocalyptic number.

581361406 is a deficient number, since it is larger than the sum of its proper divisors (291604394).

581361406 is a wasteful number, since it uses less digits than its factorization.

581361406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 307898.

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 581361406 is about 24111.4372445941. The cubic root of 581361406 is about 834.6070825192.

The spelling of 581361406 in words is "five hundred eighty-one million, three hundred sixty-one thousand, four hundred six".