1206634867 has 4 divisors (see below), whose sum is σ = 1206821896. Its totient is φ = 1206447840.

The previous prime is 1206634859. The next prime is 1206634907. The reversal of 1206634867 is 7684366021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7684366021 = 2267 ⋅3389663.

It is a cyclic number.

It is not a de Polignac number, because 1206634867 - 2³ = 1206634859 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1206634067) 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, 83478 + ... + 96859.

It is an arithmetic number, because the mean of its divisors is an integer number (301705474).

Almost surely, 2^1206634867 is an apocalyptic number.

1206634867 is a deficient number, since it is larger than the sum of its proper divisors (187029).

1206634867 is an equidigital number, since it uses as much as digits as its factorization.

1206634867 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187028.

The product of its (nonzero) digits is 290304, while the sum is 43.

The square root of 1206634867 is about 34736.6501983136. The cubic root of 1206634867 is about 1064.6134701986.

The spelling of 1206634867 in words is "one billion, two hundred six million, six hundred thirty-four thousand, eight hundred sixty-seven".