581791896 has 240 divisors, whose sum is σ = 1929228840. Its totient is φ = 163296000.

The previous prime is 581791883. The next prime is 581791919. The reversal of 581791896 is 698197185.

It is a Harshad number since it is a multiple of its sum of digits (54).

Its product of digits (1088640) is a multiple of the sum of its prime divisors (336).

It is a congruent number.

It is an unprimeable number.

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 59 ways as a sum of consecutive naturals, for example, 2317771 + ... + 2318021.

Almost surely, 2^581791896 is an apocalyptic number.

581791896 is a gapful number since it is divisible by the number (56) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 581791896, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (964614420).

581791896 is an abundant number, since it is smaller than the sum of its proper divisors (1347436944).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

581791896 is a wasteful number, since it uses less digits than its factorization.

581791896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 356 (or 336 counting only the distinct ones).

The product of its digits is 1088640, while the sum is 54.

The square root of 581791896 is about 24120.3626838404. The cubic root of 581791896 is about 834.8130366541.

The spelling of 581791896 in words is "five hundred eighty-one million, seven hundred ninety-one thousand, eight hundred ninety-six".