12705733 has 4 divisors (see below), whose sum is σ = 12713260. Its totient is φ = 12698208.

The previous prime is 12705731. The next prime is 12705757. The reversal of 12705733 is 33750721.

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, and also an emirpimes, since its reverse is a distinct semiprime: 33750721 = 5563 ⋅6067.

It can be written as a sum of positive squares in 2 ways, for example, as 3932289 + 8773444 = 1983^2 + 2962^2 .

It is a cyclic number.

It is not a de Polignac number, because 12705733 - 2¹ = 12705731 is a prime.

It is a super-2 number, since 2×12705733² = 322871302134578, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12705731) 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, 73 + ... + 5041.

It is an arithmetic number, because the mean of its divisors is an integer number (3178315).

Almost surely, 2^12705733 is an apocalyptic number.

It is an amenable number.

12705733 is a deficient number, since it is larger than the sum of its proper divisors (7527).

12705733 is an equidigital number, since it uses as much as digits as its factorization.

12705733 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7526.

The product of its (nonzero) digits is 4410, while the sum is 28.

The square root of 12705733 is about 3564.5102047827. The cubic root of 12705733 is about 233.3457569349.

The spelling of 12705733 in words is "twelve million, seven hundred five thousand, seven hundred thirty-three".