556839673 has 4 divisors (see below), whose sum is σ = 599673508. Its totient is φ = 514005840.

The previous prime is 556839667. The next prime is 556839719. The reversal of 556839673 is 376938655.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 313573264 + 243266409 = 17708^2 + 15597^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-556839673 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 556839673.

It is not an unprimeable number, because it can be changed into a prime (556839653) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21416898 + ... + 21416923.

It is an arithmetic number, because the mean of its divisors is an integer number (149918377).

Almost surely, 2^556839673 is an apocalyptic number.

It is an amenable number.

556839673 is a deficient number, since it is larger than the sum of its proper divisors (42833835).

556839673 is a wasteful number, since it uses less digits than its factorization.

556839673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42833834.

The product of its digits is 4082400, while the sum is 52.

The square root of 556839673 is about 23597.4505614484. The cubic root of 556839673 is about 822.7035852569.

It can be divided in two parts, 55683 and 9673, that added together give a palindrome (65356).

The spelling of 556839673 in words is "five hundred fifty-six million, eight hundred thirty-nine thousand, six hundred seventy-three".