11681859 has 8 divisors (see below), whose sum is σ = 17800960. Its totient is φ = 6675336.

The previous prime is 11681837. The next prime is 11681869. The reversal of 11681859 is 95818611.

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

It is not a de Polignac number, because 11681859 - 2⁷ = 11681731 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11681869) 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, 278119 + ... + 278160.

It is an arithmetic number, because the mean of its divisors is an integer number (2225120).

Almost surely, 2^11681859 is an apocalyptic number.

11681859 is a deficient number, since it is larger than the sum of its proper divisors (6119101).

11681859 is an equidigital number, since it uses as much as digits as its factorization.

11681859 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 556289.

The product of its digits is 17280, while the sum is 39.

The square root of 11681859 is about 3417.8734616717. The cubic root of 11681859 is about 226.9014754826.

The spelling of 11681859 in words is "eleven million, six hundred eighty-one thousand, eight hundred fifty-nine".