11720558 has 8 divisors (see below), whose sum is σ = 17596128. Its totient is φ = 5855184.

The previous prime is 11720551. The next prime is 11720567. The reversal of 11720558 is 85502711.

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

It is a super-3 number, since 3×11720558³ (a number of 22 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 11720558.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11720551) 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, 1835 + ... + 5177.

It is an arithmetic number, because the mean of its divisors is an integer number (2199516).

Almost surely, 2^11720558 is an apocalyptic number.

11720558 is a deficient number, since it is larger than the sum of its proper divisors (5875570).

11720558 is a wasteful number, since it uses less digits than its factorization.

11720558 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5098.

The product of its (nonzero) digits is 2800, while the sum is 29.

The square root of 11720558 is about 3423.5300495249. The cubic root of 11720558 is about 227.1517547621.

The spelling of 11720558 in words is "eleven million, seven hundred twenty thousand, five hundred fifty-eight".