11659720 has 32 divisors (see below), whose sum is σ = 27083520. Its totient is φ = 4512960.

The previous prime is 11659717. The next prime is 11659721. The reversal of 11659720 is 2795611.

11659720 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is not an unprimeable number, because it can be changed into a prime (11659721) 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, 3462 + ... + 5941.

It is an arithmetic number, because the mean of its divisors is an integer number (846360).

Almost surely, 2^11659720 is an apocalyptic number.

11659720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11659720 is an abundant number, since it is smaller than the sum of its proper divisors (15423800).

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

11659720 is a wasteful number, since it uses less digits than its factorization.

11659720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9445 (or 9441 counting only the distinct ones).

The product of its (nonzero) digits is 3780, while the sum is 31.

The square root of 11659720 is about 3414.6332160277. The cubic root of 11659720 is about 226.7580465850.

The spelling of 11659720 in words is "eleven million, six hundred fifty-nine thousand, seven hundred twenty".