1266463986 has 8 divisors (see below), whose sum is σ = 2532927984. Its totient is φ = 422154660.

The previous prime is 1266463967. The next prime is 1266464033. The reversal of 1266463986 is 6893646621.

It is a happy number.

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

1266463986 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 105538660 + ... + 105538671.

It is an arithmetic number, because the mean of its divisors is an integer number (316615998).

Almost surely, 2^1266463986 is an apocalyptic number.

1266463986 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1266463986 is a wasteful number, since it uses less digits than its factorization.

1266463986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211077336.

The product of its digits is 2239488, while the sum is 51.

The square root of 1266463986 is about 35587.4133086405. The cubic root of 1266463986 is about 1081.9261426530.

The spelling of 1266463986 in words is "one billion, two hundred sixty-six million, four hundred sixty-three thousand, nine hundred eighty-six".