1206611667 has 16 divisors (see below), whose sum is σ = 1845237760. Its totient is φ = 778458600.

The previous prime is 1206611657. The next prime is 1206611677. The reversal of 1206611667 is 7661166021.

It is an interprime number because it is at equal distance from previous prime (1206611657) and next prime (1206611677).

It is not a de Polignac number, because 1206611667 - 2⁶ = 1206611603 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1206611647) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 719959 + ... + 721632.

It is an arithmetic number, because the mean of its divisors is an integer number (115327360).

Almost surely, 2^1206611667 is an apocalyptic number.

1206611667 is a deficient number, since it is larger than the sum of its proper divisors (638626093).

1206611667 is a wasteful number, since it uses less digits than its factorization.

1206611667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1441631 (or 1441625 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 1206611667 is about 34736.3162554696. The cubic root of 1206611667 is about 1064.6066470379.

Adding to 1206611667 its reverse (7661166021), we get a palindrome (8867777688).

The spelling of 1206611667 in words is "one billion, two hundred six million, six hundred eleven thousand, six hundred sixty-seven".