13785445 has 8 divisors (see below), whose sum is σ = 16614936. Its totient is φ = 10980096.

The previous prime is 13785437. The next prime is 13785449. The reversal of 13785445 is 54458731.

13785445 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 2455489 + 11329956 = 1567^2 + 3366^2 .

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 13785445 - 2³ = 13785437 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 (13785449) 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, 4752 + ... + 7081.

It is an arithmetic number, because the mean of its divisors is an integer number (2076867).

Almost surely, 2^13785445 is an apocalyptic number.

It is an amenable number.

13785445 is a deficient number, since it is larger than the sum of its proper divisors (2829491).

13785445 is a wasteful number, since it uses less digits than its factorization.

13785445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12071.

The product of its digits is 67200, while the sum is 37.

The square root of 13785445 is about 3712.8755702286. The cubic root of 13785445 is about 239.7766730393.

The spelling of 13785445 in words is "thirteen million, seven hundred eighty-five thousand, four hundred forty-five".