11626691 has 4 divisors (see below), whose sum is σ = 12310632. Its totient is φ = 10942752.

The previous prime is 11626673. The next prime is 11626721. The reversal of 11626691 is 19662611.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11626691 - 2¹⁸ = 11364547 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11626091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 341945 + ... + 341978.

It is an arithmetic number, because the mean of its divisors is an integer number (3077658).

Almost surely, 2^11626691 is an apocalyptic number.

11626691 is a deficient number, since it is larger than the sum of its proper divisors (683941).

11626691 is an equidigital number, since it uses as much as digits as its factorization.

11626691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 683940.

The product of its digits is 3888, while the sum is 32.

The square root of 11626691 is about 3409.7933955007. The cubic root of 11626691 is about 226.5437282679.

The spelling of 11626691 in words is "eleven million, six hundred twenty-six thousand, six hundred ninety-one".