11720680 has 32 divisors (see below), whose sum is σ = 26749440. Its totient is φ = 4621120.

The previous prime is 11720671. The next prime is 11720689. The reversal of 11720680 is 8602711.

It is an interprime number because it is at equal distance from previous prime (11720671) and next prime (11720689).

It is not an unprimeable number, because it can be changed into a prime (11720689) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 777 + ... + 4903.

It is an arithmetic number, because the mean of its divisors is an integer number (835920).

Almost surely, 2^11720680 is an apocalyptic number.

11720680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11720680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13374720).

11720680 is an abundant number, since it is smaller than the sum of its proper divisors (15028760).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11720680 is a wasteful number, since it uses less digits than its factorization.

11720680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4209 (or 4205 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 25.

The square root of 11720680 is about 3423.5478673446. The cubic root of 11720680 is about 227.1525429048.

The spelling of 11720680 in words is "eleven million, seven hundred twenty thousand, six hundred eighty".