13066568 has 8 divisors (see below), whose sum is σ = 24499830. Its totient is φ = 6533280.

The previous prime is 13066549. The next prime is 13066589. The reversal of 13066568 is 86566031.

It can be written as a sum of positive squares in only one way, i.e., 9746884 + 3319684 = 3122^2 + 1822^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 816653 + ... + 816668.

Almost surely, 2^13066568 is an apocalyptic number.

It is an amenable number.

13066568 is a deficient number, since it is larger than the sum of its proper divisors (11433262).

13066568 is a wasteful number, since it uses less digits than its factorization.

13066568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1633327 (or 1633323 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 35.

The square root of 13066568 is about 3614.7708087789. The cubic root of 13066568 is about 235.5341283596.

It can be divided in two parts, 130665 and 68, that multiplied together give a triangular number (8885220 = T₄₂₁₅).

The spelling of 13066568 in words is "thirteen million, sixty-six thousand, five hundred sixty-eight".