1206012665 has 32 divisors (see below), whose sum is σ = 1703382912. Its totient is φ = 808128000.

The previous prime is 1206012649. The next prime is 1206012667. The reversal of 1206012665 is 5662106021.

It is not a de Polignac number, because 1206012665 - 2⁴ = 1206012649 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1206012667) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 492845 + ... + 495285.

It is an arithmetic number, because the mean of its divisors is an integer number (53230716).

Almost surely, 2^1206012665 is an apocalyptic number.

It is an amenable number.

1206012665 is a deficient number, since it is larger than the sum of its proper divisors (497370247).

1206012665 is a wasteful number, since it uses less digits than its factorization.

1206012665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3161.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 1206012665 is about 34727.6930561188. The cubic root of 1206012665 is about 1064.4304492097.

Adding to 1206012665 its reverse (5662106021), we get a palindrome (6868118686).

The spelling of 1206012665 in words is "one billion, two hundred six million, twelve thousand, six hundred sixty-five".