11640705 has 8 divisors (see below), whose sum is σ = 18625152. Its totient is φ = 6208368.

The previous prime is 11640689. The next prime is 11640719. The reversal of 11640705 is 50704611.

11640705 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 11640705 - 2⁴ = 11640689 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 388009 + ... + 388038.

It is an arithmetic number, because the mean of its divisors is an integer number (2328144).

Almost surely, 2^11640705 is an apocalyptic number.

11640705 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11640705 is a deficient number, since it is larger than the sum of its proper divisors (6984447).

11640705 is an equidigital number, since it uses as much as digits as its factorization.

11640705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 776055.

The product of its (nonzero) digits is 840, while the sum is 24.

The square root of 11640705 is about 3411.8477398618. The cubic root of 11640705 is about 226.6347117102.

The spelling of 11640705 in words is "eleven million, six hundred forty thousand, seven hundred five".