11647993 has 8 divisors (see below), whose sum is σ = 13343040. Its totient is φ = 9960720.

The previous prime is 11647991. The next prime is 11648003. The reversal of 11647993 is 39974611.

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

It is not a de Polignac number, because 11647993 - 2¹ = 11647991 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11647991) 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, 1743 + ... + 5131.

It is an arithmetic number, because the mean of its divisors is an integer number (1667880).

Almost surely, 2^11647993 is an apocalyptic number.

It is an amenable number.

11647993 is a deficient number, since it is larger than the sum of its proper divisors (1695047).

11647993 is an equidigital number, since it uses as much as digits as its factorization.

11647993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3887.

The product of its digits is 40824, while the sum is 40.

The square root of 11647993 is about 3412.9156157163. The cubic root of 11647993 is about 226.6819989148.

The spelling of 11647993 in words is "eleven million, six hundred forty-seven thousand, nine hundred ninety-three".