12740679 has 16 divisors (see below), whose sum is σ = 21571840. Its totient is φ = 7280280.

The previous prime is 12740677. The next prime is 12740699. The reversal of 12740679 is 97604721.

It is a happy number.

It is not a de Polignac number, because 12740679 - 2¹ = 12740677 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 (12740671) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33517 + ... + 33894.

It is an arithmetic number, because the mean of its divisors is an integer number (1348240).

Almost surely, 2^12740679 is an apocalyptic number.

12740679 is a deficient number, since it is larger than the sum of its proper divisors (8831161).

12740679 is an equidigital number, since it uses as much as digits as its factorization.

12740679 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67427 (or 67421 counting only the distinct ones).

The product of its (nonzero) digits is 21168, while the sum is 36.

The square root of 12740679 is about 3569.4087745732. The cubic root of 12740679 is about 233.5594934202.

The spelling of 12740679 in words is "twelve million, seven hundred forty thousand, six hundred seventy-nine".