11358661 has 4 divisors (see below), whose sum is σ = 11424492. Its totient is φ = 11292832.

The previous prime is 11358649. The next prime is 11358689. The reversal of 11358661 is 16685311.

11358661 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 10929636 + 429025 = 3306^2 + 655^2 .

It is a cyclic number.

It is not a de Polignac number, because 11358661 - 2¹⁷ = 11227589 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 (11358461) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32656 + ... + 33001.

It is an arithmetic number, because the mean of its divisors is an integer number (2856123).

Almost surely, 2^11358661 is an apocalyptic number.

It is an amenable number.

11358661 is a deficient number, since it is larger than the sum of its proper divisors (65831).

11358661 is an equidigital number, since it uses as much as digits as its factorization.

11358661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65830.

The product of its digits is 4320, while the sum is 31.

The square root of 11358661 is about 3370.2612658368. The cubic root of 11358661 is about 224.7893402767.

The spelling of 11358661 in words is "eleven million, three hundred fifty-eight thousand, six hundred sixty-one".