13485569 has 4 divisors (see below), whose sum is σ = 13772544. Its totient is φ = 13198596.

The previous prime is 13485557. The next prime is 13485587. The reversal of 13485569 is 96558431.

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: 96558431 = 3299 ⋅29269.

It is a cyclic number.

It is not a de Polignac number, because 13485569 - 2⁴ = 13485553 is a prime.

It is a super-2 number, since 2×13485569² = 363721142507522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13485169) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 143417 + ... + 143510.

It is an arithmetic number, because the mean of its divisors is an integer number (3443136).

Almost surely, 2^13485569 is an apocalyptic number.

It is an amenable number.

13485569 is a deficient number, since it is larger than the sum of its proper divisors (286975).

13485569 is an equidigital number, since it uses as much as digits as its factorization.

13485569 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 286974.

The product of its digits is 129600, while the sum is 41.

The square root of 13485569 is about 3672.2702787240. The cubic root of 13485569 is about 238.0252838991.

The spelling of 13485569 in words is "thirteen million, four hundred eighty-five thousand, five hundred sixty-nine".