1206103566 has 16 divisors (see below), whose sum is σ = 2463531264. Its totient is φ = 393480504.

The previous prime is 1206103543. The next prime is 1206103571. The reversal of 1206103566 is 6653016021.

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 7 ways as a sum of consecutive naturals, for example, 2138200 + ... + 2138763.

It is an arithmetic number, because the mean of its divisors is an integer number (153970704).

Almost surely, 2^1206103566 is an apocalyptic number.

1206103566 is an abundant number, since it is smaller than the sum of its proper divisors (1257427698).

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

1206103566 is a wasteful number, since it uses less digits than its factorization.

1206103566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4277015.

The product of its (nonzero) digits is 6480, while the sum is 30.

The square root of 1206103566 is about 34729.0017996487. The cubic root of 1206103566 is about 1064.4571917043.

Adding to 1206103566 its reverse (6653016021), we get a palindrome (7859119587).

The spelling of 1206103566 in words is "one billion, two hundred six million, one hundred three thousand, five hundred sixty-six".