1263600066 has 8 divisors (see below), whose sum is σ = 2527200144. Its totient is φ = 421200020.

The previous prime is 1263600053. The next prime is 1263600071. The reversal of 1263600066 is 6600063621.

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

1263600066 is an admirable number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 105300000 + ... + 105300011.

It is an arithmetic number, because the mean of its divisors is an integer number (315900018).

Almost surely, 2^1263600066 is an apocalyptic number.

1263600066 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.

1263600066 is a wasteful number, since it uses less digits than its factorization.

1263600066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210600016.

The product of its (nonzero) digits is 7776, while the sum is 30.

The square root of 1263600066 is about 35547.1527129811. The cubic root of 1263600066 is about 1081.1099887715.

Adding to 1263600066 its reverse (6600063621), we get a palindrome (7863663687).

The spelling of 1263600066 in words is "one billion, two hundred sixty-three million, six hundred thousand, sixty-six".