13897785 has 16 divisors (see below), whose sum is σ = 24258240. Its totient is φ = 6738240.

The previous prime is 13897783. The next prime is 13897787. The reversal of 13897785 is 58779831.

13897785 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (13897783) and next prime (13897787).

It is not a de Polignac number, because 13897785 - 2¹ = 13897783 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (13897783) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41950 + ... + 42279.

It is an arithmetic number, because the mean of its divisors is an integer number (1516140).

Almost surely, 2^13897785 is an apocalyptic number.

13897785 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13897785 is a deficient number, since it is larger than the sum of its proper divisors (10360455).

13897785 is a wasteful number, since it uses less digits than its factorization.

13897785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84248.

The product of its digits is 423360, while the sum is 48.

The square root of 13897785 is about 3727.9733099903. The cubic root of 13897785 is about 240.4262390807.

It can be divided in two parts, 13 and 897785, that added together give a palindrome (897798).

The spelling of 13897785 in words is "thirteen million, eight hundred ninety-seven thousand, seven hundred eighty-five".