11966657 has 6 divisors (see below), whose sum is σ = 12685698. Its totient is φ = 11249312.

The previous prime is 11966653. The next prime is 11966659. The reversal of 11966657 is 75666911.

It can be written as a sum of positive squares in only one way, i.e., 11262736 + 703921 = 3356^2 + 839^2 .

It is not a de Polignac number, because 11966657 - 2² = 11966653 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11966653) 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 5 ways as a sum of consecutive naturals, for example, 13844 + ... + 14682.

It is an arithmetic number, because the mean of its divisors is an integer number (2114283).

Almost surely, 2^11966657 is an apocalyptic number.

11966657 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

11966657 is a deficient number, since it is larger than the sum of its proper divisors (719041).

11966657 is an frugal number, since it uses more digits than its factorization.

11966657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1695 (or 856 counting only the distinct ones).

The product of its digits is 68040, while the sum is 41.

The square root of 11966657 is about 3459.2856198932. The cubic root of 11966657 is about 228.7306062171.

The spelling of 11966657 in words is "eleven million, nine hundred sixty-six thousand, six hundred fifty-seven".