556642340 has 12 divisors (see below), whose sum is σ = 1168948956. Its totient is φ = 222656928.

The previous prime is 556642337. The next prime is 556642349. The reversal of 556642340 is 43246655.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 143089444 + 413552896 = 11962^2 + 20336^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 556642340.

It is not an unprimeable number, because it can be changed into a prime (556642349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13916039 + ... + 13916078.

It is an arithmetic number, because the mean of its divisors is an integer number (97412413).

Almost surely, 2^556642340 is an apocalyptic number.

It is an amenable number.

556642340 is an abundant number, since it is smaller than the sum of its proper divisors (612306616).

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

556642340 is a wasteful number, since it uses less digits than its factorization.

556642340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27832126 (or 27832124 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 35.

The square root of 556642340 is about 23593.2689553610. The cubic root of 556642340 is about 822.6063904654.

Adding to 556642340 its reverse (43246655), we get a palindrome (599888995).

The spelling of 556642340 in words is "five hundred fifty-six million, six hundred forty-two thousand, three hundred forty".