1206662011 has 4 divisors (see below), whose sum is σ = 1245586624. Its totient is φ = 1167737400.

The previous prime is 1206662003. The next prime is 1206662029. The reversal of 1206662011 is 1102666021.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1206662011 - 2³ = 1206662003 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1206663011) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 19462260 + ... + 19462321.

It is an arithmetic number, because the mean of its divisors is an integer number (311396656).

Almost surely, 2^1206662011 is an apocalyptic number.

1206662011 is a deficient number, since it is larger than the sum of its proper divisors (38924613).

1206662011 is an equidigital number, since it uses as much as digits as its factorization.

1206662011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38924612.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 1206662011 is about 34737.0409073657. The cubic root of 1206662011 is about 1064.6214531855.

The spelling of 1206662011 in words is "one billion, two hundred six million, six hundred sixty-two thousand, eleven".