11782061 has 4 divisors (see below), whose sum is σ = 11789052. Its totient is φ = 11775072.

The previous prime is 11782039. The next prime is 11782073. The reversal of 11782061 is 16028711.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 256036 + 11526025 = 506^2 + 3395^2 .

It is a cyclic number.

It is not a de Polignac number, because 11782061 - 2⁶ = 11781997 is a prime.

It is a super-2 number, since 2×11782061² = 277633922815442, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11782061.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11782031) 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, 761 + ... + 4913.

It is an arithmetic number, because the mean of its divisors is an integer number (2947263).

Almost surely, 2^11782061 is an apocalyptic number.

It is an amenable number.

11782061 is a deficient number, since it is larger than the sum of its proper divisors (6991).

11782061 is an equidigital number, since it uses as much as digits as its factorization.

11782061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6990.

The product of its (nonzero) digits is 672, while the sum is 26.

The square root of 11782061 is about 3432.5006919154. The cubic root of 11782061 is about 227.5483840254.

The spelling of 11782061 in words is "eleven million, seven hundred eighty-two thousand, sixty-one".