13709657 has 8 divisors (see below), whose sum is σ = 15240960. Its totient is φ = 12246480.

The previous prime is 13709651. The next prime is 13709681. The reversal of 13709657 is 75690731.

13709657 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 13709657 - 2⁶ = 13709593 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13709657.

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

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16607 + ... + 17412.

It is an arithmetic number, because the mean of its divisors is an integer number (1905120).

Almost surely, 2^13709657 is an apocalyptic number.

It is an amenable number.

13709657 is a deficient number, since it is larger than the sum of its proper divisors (1531303).

13709657 is a wasteful number, since it uses less digits than its factorization.

13709657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34063.

The product of its (nonzero) digits is 39690, while the sum is 38.

The square root of 13709657 is about 3702.6553984944. The cubic root of 13709657 is about 239.3364599925.

The spelling of 13709657 in words is "thirteen million, seven hundred nine thousand, six hundred fifty-seven".