1206251066 has 8 divisors (see below), whose sum is σ = 1828030260. Its totient is φ = 596907648.

The previous prime is 1206251063. The next prime is 1206251071. The reversal of 1206251066 is 6601526021.

It can be written as a sum of positive squares in 2 ways, for example, as 1091311225 + 114939841 = 33035^2 + 10721^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×1206251066² = 2910083268452272712, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1206251063) 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, 3108701 + ... + 3109088.

Almost surely, 2^1206251066 is an apocalyptic number.

1206251066 is a deficient number, since it is larger than the sum of its proper divisors (621779194).

1206251066 is an equidigital number, since it uses as much as digits as its factorization.

1206251066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6217888.

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

The square root of 1206251066 is about 34731.1253200929. The cubic root of 1206251066 is about 1064.5005824048.

Adding to 1206251066 its reverse (6601526021), we get a palindrome (7807777087).

The spelling of 1206251066 in words is "one billion, two hundred six million, two hundred fifty-one thousand, sixty-six".