13220767 has 8 divisors (see below), whose sum is σ = 15203456. Its totient is φ = 11261592.

The previous prime is 13220749. The next prime is 13220773. The reversal of 13220767 is 76702231.

13220767 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 13220767 - 2⁷ = 13220639 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13220717) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4653 + ... + 6934.

It is an arithmetic number, because the mean of its divisors is an integer number (1900432).

Almost surely, 2^13220767 is an apocalyptic number.

13220767 is a deficient number, since it is larger than the sum of its proper divisors (1982689).

13220767 is a wasteful number, since it uses less digits than its factorization.

13220767 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11757.

The product of its (nonzero) digits is 3528, while the sum is 28.

The square root of 13220767 is about 3636.0372660356. The cubic root of 13220767 is about 236.4570227946.

Adding to 13220767 its reverse (76702231), we get a palindrome (89922998).

It can be divided in two parts, 13 and 220767, that added together give a triangular number (220780 = T₆₆₄).

The spelling of 13220767 in words is "thirteen million, two hundred twenty thousand, seven hundred sixty-seven".