11639697 has 8 divisors (see below), whose sum is σ = 15782880. Its totient is φ = 7628160.

The previous prime is 11639681. The next prime is 11639707. The reversal of 11639697 is 79693611.

11639697 is digitally balanced in base 2, because in such base 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 11639697 - 2⁴ = 11639681 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (11639897) 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, 32704 + ... + 33057.

It is an arithmetic number, because the mean of its divisors is an integer number (1972860).

Almost surely, 2^11639697 is an apocalyptic number.

It is an amenable number.

11639697 is a deficient number, since it is larger than the sum of its proper divisors (4143183).

11639697 is an equidigital number, since it uses as much as digits as its factorization.

11639697 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65823.

The product of its digits is 61236, while the sum is 42.

The square root of 11639697 is about 3411.7000161210. The cubic root of 11639697 is about 226.6281698847.

The spelling of 11639697 in words is "eleven million, six hundred thirty-nine thousand, six hundred ninety-seven".