1260736666 has 8 divisors (see below), whose sum is σ = 2161262880. Its totient is φ = 540315708.

The previous prime is 1260736663. The next prime is 1260736669. The reversal of 1260736666 is 6666370621.

It is an interprime number because it is at equal distance from previous prime (1260736663) and next prime (1260736669).

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

It is not an unprimeable number, because it can be changed into a prime (1260736663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45026296 + ... + 45026323.

It is an arithmetic number, because the mean of its divisors is an integer number (270157860).

Almost surely, 2^1260736666 is an apocalyptic number.

1260736666 is a deficient number, since it is larger than the sum of its proper divisors (900526214).

1260736666 is an equidigital number, since it uses as much as digits as its factorization.

1260736666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90052628.

The product of its (nonzero) digits is 326592, while the sum is 43.

The square root of 1260736666 is about 35506.8537890926. The cubic root of 1260736666 is about 1080.2927492855.

The spelling of 1260736666 in words is "one billion, two hundred sixty million, seven hundred thirty-six thousand, six hundred sixty-six".