1206556568 has 16 divisors (see below), whose sum is σ = 2585478480. Its totient is φ = 517095648.

The previous prime is 1206556553. The next prime is 1206556573. The reversal of 1206556568 is 8656556021.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

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 in 3 ways as a sum of consecutive naturals, for example, 10772771 + ... + 10772882.

It is an arithmetic number, because the mean of its divisors is an integer number (161592405).

Almost surely, 2^1206556568 is an apocalyptic number.

It is an amenable number.

1206556568 is an abundant number, since it is smaller than the sum of its proper divisors (1378921912).

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

1206556568 is a wasteful number, since it uses less digits than its factorization.

1206556568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21545666 (or 21545662 counting only the distinct ones).

The product of its (nonzero) digits is 432000, while the sum is 44.

The square root of 1206556568 is about 34735.5231427425. The cubic root of 1206556568 is about 1064.5904419748.

The spelling of 1206556568 in words is "one billion, two hundred six million, five hundred fifty-six thousand, five hundred sixty-eight".