13720558 has 16 divisors (see below), whose sum is σ = 21559680. Its totient is φ = 6536376.

The previous prime is 13720543. The next prime is 13720589. The reversal of 13720558 is 85502731.

It is a super-3 number, since 3×13720558³ (a number of 22 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17041 + ... + 17827.

It is an arithmetic number, because the mean of its divisors is an integer number (1347480).

Almost surely, 2^13720558 is an apocalyptic number.

13720558 is a deficient number, since it is larger than the sum of its proper divisors (7839122).

13720558 is a wasteful number, since it uses less digits than its factorization.

13720558 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1191.

The product of its (nonzero) digits is 8400, while the sum is 31.

The square root of 13720558 is about 3704.1271576446. The cubic root of 13720558 is about 239.3998779553.

The spelling of 13720558 in words is "thirteen million, seven hundred twenty thousand, five hundred fifty-eight".