13005766 has 8 divisors (see below), whose sum is σ = 20535480. Its totient is φ = 6160608.

The previous prime is 13005761. The next prime is 13005767. The reversal of 13005766 is 66750031.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13005761) 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, 171091 + ... + 171166.

It is an arithmetic number, because the mean of its divisors is an integer number (2566935).

Almost surely, 2^13005766 is an apocalyptic number.

13005766 is a deficient number, since it is larger than the sum of its proper divisors (7529714).

13005766 is a wasteful number, since it uses less digits than its factorization.

13005766 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 342278.

The product of its (nonzero) digits is 3780, while the sum is 28.

The square root of 13005766 is about 3606.3507871531. The cubic root of 13005766 is about 235.1682272127.

Adding to 13005766 its reverse (66750031), we get a palindrome (79755797).

The spelling of 13005766 in words is "thirteen million, five thousand, seven hundred sixty-six".