2559564628 has 6 divisors (see below), whose sum is σ = 4479238106. Its totient is φ = 1279782312.

The previous prime is 2559564599. The next prime is 2559564647. The reversal of 2559564628 is 8264659552.

It can be written as a sum of positive squares in only one way, i.e., 1653072964 + 906491664 = 40658^2 + 30108^2 .

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 319945575 + ... + 319945582.

Almost surely, 2^2559564628 is an apocalyptic number.

It is an amenable number.

2559564628 is a deficient number, since it is larger than the sum of its proper divisors (1919673478).

2559564628 is a wasteful number, since it uses less digits than its factorization.

2559564628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 639891161 (or 639891159 counting only the distinct ones).

The product of its digits is 5184000, while the sum is 52.

The square root of 2559564628 is about 50592.1399824123. The cubic root of 2559564628 is about 1367.9032033981.

The spelling of 2559564628 in words is "two billion, five hundred fifty-nine million, five hundred sixty-four thousand, six hundred twenty-eight".