12681773 has 4 divisors (see below), whose sum is σ = 13657308. Its totient is φ = 11706240.

The previous prime is 12681769. The next prime is 12681793. The reversal of 12681773 is 37718621.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 37718621 = 1913 ⋅19717.

It can be written as a sum of positive squares in 2 ways, for example, as 6061444 + 6620329 = 2462^2 + 2573^2 .

It is not a de Polignac number, because 12681773 - 2² = 12681769 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 (12681703) 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, 487748 + ... + 487773.

It is an arithmetic number, because the mean of its divisors is an integer number (3414327).

Almost surely, 2^12681773 is an apocalyptic number.

12681773 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

12681773 is a deficient number, since it is larger than the sum of its proper divisors (975535).

12681773 is an equidigital number, since it uses as much as digits as its factorization.

12681773 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 975534.

The product of its digits is 14112, while the sum is 35.

The square root of 12681773 is about 3561.1477082536. The cubic root of 12681773 is about 233.1989863804.

The spelling of 12681773 in words is "twelve million, six hundred eighty-one thousand, seven hundred seventy-three".