1266506612 has 24 divisors (see below), whose sum is σ = 2614725120. Its totient is φ = 525278880.

The previous prime is 1266506609. The next prime is 1266506627. The reversal of 1266506612 is 2166056621.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 728687 + ... + 730422.

It is an arithmetic number, because the mean of its divisors is an integer number (108946880).

Almost surely, 2^1266506612 is an apocalyptic number.

It is an amenable number.

1266506612 is an abundant number, since it is smaller than the sum of its proper divisors (1348218508).

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

1266506612 is a wasteful number, since it uses less digits than its factorization.

1266506612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1459151 (or 1459149 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 35.

The square root of 1266506612 is about 35588.0121951199. The cubic root of 1266506612 is about 1081.9382808232.

The spelling of 1266506612 in words is "one billion, two hundred sixty-six million, five hundred six thousand, six hundred twelve".