11680578 has 64 divisors (see below), whose sum is σ = 31960320. Its totient is φ = 3079296.

The previous prime is 11680577. The next prime is 11680597. The reversal of 11680578 is 87508611.

11680578 is a `hidden beast` number, since 1 + 1 + 6 + 80 + 578 = 666.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (11680577) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3726 + ... + 6102.

It is an arithmetic number, because the mean of its divisors is an integer number (499380).

Almost surely, 2^11680578 is an apocalyptic number.

11680578 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 11680578, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15980160).

11680578 is an abundant number, since it is smaller than the sum of its proper divisors (20279742).

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

11680578 is a wasteful number, since it uses less digits than its factorization.

11680578 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2408 (or 2402 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 36.

The square root of 11680578 is about 3417.6860593097. The cubic root of 11680578 is about 226.8931813856.

The spelling of 11680578 in words is "eleven million, six hundred eighty thousand, five hundred seventy-eight".