11680289 has 4 divisors (see below), whose sum is σ = 11878320. Its totient is φ = 11482260.

The previous prime is 11680267. The next prime is 11680313. The reversal of 11680289 is 98208611.

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: 98208611 = 859 ⋅114329.

It is a cyclic number.

It is not a de Polignac number, because 11680289 - 2⁸ = 11680033 is a prime.

It is a super-2 number, since 2×11680289² = 272858302247042, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11680189) 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, 98927 + ... + 99044.

It is an arithmetic number, because the mean of its divisors is an integer number (2969580).

Almost surely, 2^11680289 is an apocalyptic number.

It is an amenable number.

11680289 is a deficient number, since it is larger than the sum of its proper divisors (198031).

11680289 is an equidigital number, since it uses as much as digits as its factorization.

11680289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198030.

The product of its (nonzero) digits is 6912, while the sum is 35.

The square root of 11680289 is about 3417.6437789799. The cubic root of 11680289 is about 226.8913101121.

The spelling of 11680289 in words is "eleven million, six hundred eighty thousand, two hundred eighty-nine".