557746812 has 144 divisors (see below), whose sum is σ = 1741521600. Its totient is φ = 149925888.

The previous prime is 557746811. The next prime is 557746837. The reversal of 557746812 is 218647755.

557746812 is a `hidden beast` number, since 5 + 577 + 4 + 68 + 12 = 666.

557746812 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×557746812² = 622163012592326688, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (557746811) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 208588 + ... + 211244.

It is an arithmetic number, because the mean of its divisors is an integer number (12093900).

Almost surely, 2^557746812 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 557746812, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (870760800).

557746812 is an abundant number, since it is smaller than the sum of its proper divisors (1183774788).

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

557746812 is a wasteful number, since it uses less digits than its factorization.

557746812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2705 (or 2686 counting only the distinct ones).

The product of its digits is 470400, while the sum is 45.

The square root of 557746812 is about 23616.6638626204. The cubic root of 557746812 is about 823.1500941563.

The spelling of 557746812 in words is "five hundred fifty-seven million, seven hundred forty-six thousand, eight hundred twelve".