556318749 has 8 divisors (see below), whose sum is σ = 847723840. Its totient is φ = 317896416.

The previous prime is 556318747. The next prime is 556318751. The reversal of 556318749 is 947813655.

It is an interprime number because it is at equal distance from previous prime (556318747) and next prime (556318751).

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

It is not a de Polignac number, because 556318749 - 2¹ = 556318747 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 556318698 and 556318707.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (556318747) 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, 13245664 + ... + 13245705.

It is an arithmetic number, because the mean of its divisors is an integer number (105965480).

Almost surely, 2^556318749 is an apocalyptic number.

It is an amenable number.

556318749 is a deficient number, since it is larger than the sum of its proper divisors (291405091).

556318749 is a wasteful number, since it uses less digits than its factorization.

556318749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26491379.

The product of its digits is 907200, while the sum is 48.

The square root of 556318749 is about 23586.4102609956. The cubic root of 556318749 is about 822.4469585748.

The spelling of 556318749 in words is "five hundred fifty-six million, three hundred eighteen thousand, seven hundred forty-nine".