11666737 has 2 divisors, whose sum is σ = 11666738. Its totient is φ = 11666736.

The previous prime is 11666701. The next prime is 11666747. The reversal of 11666737 is 73766611.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11397376 + 269361 = 3376^2 + 519^2 .

It is an emirp because it is prime and its reverse (73766611) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11666737 - 2¹⁹ = 11142449 is a prime.

It is a super-2 number, since 2×11666737² = 272225504454338, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11666696 and 11666705.

It is not a weakly prime, because it can be changed into another prime (11666747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5833368 + 5833369.

It is an arithmetic number, because the mean of its divisors is an integer number (5833369).

Almost surely, 2^11666737 is an apocalyptic number.

It is an amenable number.

11666737 is a deficient number, since it is larger than the sum of its proper divisors (1).

11666737 is an equidigital number, since it uses as much as digits as its factorization.

11666737 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 31752, while the sum is 37.

The square root of 11666737 is about 3415.6605510501. The cubic root of 11666737 is about 226.8035262970.

It can be divided in two parts, 11666 and 737, that added together give a triangular number (12403 = T₁₅₇).

The spelling of 11666737 in words is "eleven million, six hundred sixty-six thousand, seven hundred thirty-seven".