11626861 has 4 divisors (see below), whose sum is σ = 12310812. Its totient is φ = 10942912.

The previous prime is 11626847. The next prime is 11626873. The reversal of 11626861 is 16862611.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 16862611 = 23 ⋅733157.

It can be written as a sum of positive squares in 2 ways, for example, as 10929636 + 697225 = 3306^2 + 835^2 .

It is a cyclic number.

It is not a de Polignac number, because 11626861 - 2¹⁹ = 11102573 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11626801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 341950 + ... + 341983.

It is an arithmetic number, because the mean of its divisors is an integer number (3077703).

Almost surely, 2^11626861 is an apocalyptic number.

It is an amenable number.

11626861 is a deficient number, since it is larger than the sum of its proper divisors (683951).

11626861 is an equidigital number, since it uses as much as digits as its factorization.

11626861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 683950.

The product of its digits is 3456, while the sum is 31.

The square root of 11626861 is about 3409.8183236061. The cubic root of 11626861 is about 226.5448324011.

The spelling of 11626861 in words is "eleven million, six hundred twenty-six thousand, eight hundred sixty-one".