1263564066 has 24 divisors (see below), whose sum is σ = 2684530800. Its totient is φ = 396411712.

The previous prime is 1263564059. The next prime is 1263564143. The reversal of 1263564066 is 6604653621.

It is a super-3 number, since 3×1263564066³ (a number of 28 digits) contains 333 as substring.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 362616 + ... + 366083.

It is an arithmetic number, because the mean of its divisors is an integer number (111855450).

Almost surely, 2^1263564066 is an apocalyptic number.

1263564066 is an abundant number, since it is smaller than the sum of its proper divisors (1420966734).

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

1263564066 is a wasteful number, since it uses less digits than its factorization.

1263564066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 728738 (or 728721 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 39.

The square root of 1263564066 is about 35546.6463397041. The cubic root of 1263564066 is about 1081.0997217231.

The spelling of 1263564066 in words is "one billion, two hundred sixty-three million, five hundred sixty-four thousand, sixty-six".