13606257 has 8 divisors (see below), whose sum is σ = 20733376. Its totient is φ = 7774992.

The previous prime is 13606207. The next prime is 13606283. The reversal of 13606257 is 75260631.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 13606257 - 2⁶ = 13606193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13606207) 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, 323938 + ... + 323979.

It is an arithmetic number, because the mean of its divisors is an integer number (2591672).

Almost surely, 2^13606257 is an apocalyptic number.

It is an amenable number.

13606257 is a deficient number, since it is larger than the sum of its proper divisors (7127119).

13606257 is an equidigital number, since it uses as much as digits as its factorization.

13606257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 647927.

The product of its (nonzero) digits is 7560, while the sum is 30.

The square root of 13606257 is about 3688.6660190372. Note that the first 3 decimals coincide. The cubic root of 13606257 is about 238.7332387747.

Adding to 13606257 its reverse (75260631), we get a palindrome (88866888).

The spelling of 13606257 in words is "thirteen million, six hundred six thousand, two hundred fifty-seven".