13051689 has 24 divisors (see below), whose sum is σ = 21313440. Its totient is φ = 7064064.

The previous prime is 13051681. The next prime is 13051693. The reversal of 13051689 is 98615031.

13051689 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13051689 - 2³ = 13051681 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13051681) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 457 + ... + 5129.

It is an arithmetic number, because the mean of its divisors is an integer number (888060).

Almost surely, 2^13051689 is an apocalyptic number.

13051689 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

13051689 is a deficient number, since it is larger than the sum of its proper divisors (8261751).

13051689 is a wasteful number, since it uses less digits than its factorization.

13051689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4709 (or 4702 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 33.

The square root of 13051689 is about 3612.7121390999. The cubic root of 13051689 is about 235.4446929051. Note that the first 3 decimals are identical.

The spelling of 13051689 in words is "thirteen million, fifty-one thousand, six hundred eighty-nine".