556786813 has 8 divisors (see below), whose sum is σ = 610489440. Its totient is φ = 503598480.

The previous prime is 556786807. The next prime is 556786823. The reversal of 556786813 is 318687655.

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

It is a de Polignac number, because none of the positive numbers 2^k-556786813 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (556786823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 126303 + ... + 130636.

It is an arithmetic number, because the mean of its divisors is an integer number (76311180).

Almost surely, 2^556786813 is an apocalyptic number.

It is an amenable number.

556786813 is a deficient number, since it is larger than the sum of its proper divisors (53702627).

556786813 is a wasteful number, since it uses less digits than its factorization.

556786813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 257147.

The product of its digits is 1209600, while the sum is 49.

The square root of 556786813 is about 23596.3304986178. The cubic root of 556786813 is about 822.6775517385.

The spelling of 556786813 in words is "five hundred fifty-six million, seven hundred eighty-six thousand, eight hundred thirteen".