13757609 has 4 divisors (see below), whose sum is σ = 13769616. Its totient is φ = 13745604.

The previous prime is 13757593. The next prime is 13757621. The reversal of 13757609 is 90675731.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 90675731 = 757 ⋅119783.

It is a cyclic number.

It is not a de Polignac number, because 13757609 - 2⁴ = 13757593 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (13757659) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4079 + ... + 6644.

It is an arithmetic number, because the mean of its divisors is an integer number (3442404).

Almost surely, 2^13757609 is an apocalyptic number.

It is an amenable number.

13757609 is a deficient number, since it is larger than the sum of its proper divisors (12007).

13757609 is a wasteful number, since it uses less digits than its factorization.

13757609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12006.

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

The square root of 13757609 is about 3709.1250989957. The cubic root of 13757609 is about 239.6151761146.

The spelling of 13757609 in words is "thirteen million, seven hundred fifty-seven thousand, six hundred nine".