13709655 has 20 divisors (see below), whose sum is σ = 24576552. Its totient is φ = 7311600.

The previous prime is 13709651. The next prime is 13709681. The reversal of 13709655 is 55690731.

It is a happy number.

13709655 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13709655 - 2² = 13709651 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13709651) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 16521 + ... + 17330.

Almost surely, 2^13709655 is an apocalyptic number.

13709655 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

13709655 is a deficient number, since it is larger than the sum of its proper divisors (10866897).

13709655 is an equidigital number, since it uses as much as digits as its factorization.

13709655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33868 (or 33859 counting only the distinct ones).

The product of its (nonzero) digits is 28350, while the sum is 36.

The square root of 13709655 is about 3702.6551284180. The cubic root of 13709655 is about 239.3364483541.

It can be divided in two parts, 1370 and 9655, that added together give a square (11025 = 105²).

The spelling of 13709655 in words is "thirteen million, seven hundred nine thousand, six hundred fifty-five".