13420775 has 12 divisors (see below), whose sum is σ = 16878384. Its totient is φ = 10584000.

The previous prime is 13420747. The next prime is 13420801. The reversal of 13420775 is 57702431.

It is a de Polignac number, because none of the positive numbers 2^k-13420775 is a prime.

It is a Duffinian number.

It is a congruent number.

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, 2006 + ... + 5555.

It is an arithmetic number, because the mean of its divisors is an integer number (1406532).

Almost surely, 2^13420775 is an apocalyptic number.

13420775 is a deficient number, since it is larger than the sum of its proper divisors (3457609).

13420775 is an equidigital number, since it uses as much as digits as its factorization.

13420775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7642 (or 7637 counting only the distinct ones).

The product of its (nonzero) digits is 5880, while the sum is 29.

The square root of 13420775 is about 3663.4375932995. The cubic root of 13420775 is about 237.6434590342.

The spelling of 13420775 in words is "thirteen million, four hundred twenty thousand, seven hundred seventy-five".