12706739 has 4 divisors (see below), whose sum is σ = 12722424. Its totient is φ = 12691056.

The previous prime is 12706723. The next prime is 12706777. The reversal of 12706739 is 93760721.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 93760721 = 61 ⋅1537061.

It is a cyclic number.

It is not a de Polignac number, because 12706739 - 2⁴ = 12706723 is a prime.

It is a super-2 number, since 2×12706739² = 322922432028242, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12706699 and 12706708.

It is not an unprimeable number, because it can be changed into a prime (12706139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6557 + ... + 8270.

It is an arithmetic number, because the mean of its divisors is an integer number (3180606).

Almost surely, 2^12706739 is an apocalyptic number.

12706739 is a deficient number, since it is larger than the sum of its proper divisors (15685).

12706739 is an equidigital number, since it uses as much as digits as its factorization.

12706739 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15684.

The product of its (nonzero) digits is 15876, while the sum is 35.

The square root of 12706739 is about 3564.6513153463. The cubic root of 12706739 is about 233.3519153002.

The spelling of 12706739 in words is "twelve million, seven hundred six thousand, seven hundred thirty-nine".