12740086 has 4 divisors (see below), whose sum is σ = 19110132. Its totient is φ = 6370042.

The previous prime is 12740081. The next prime is 12740107. The reversal of 12740086 is 68004721.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 68004721 = 23 ⋅2956727.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12740081) 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 as a sum of consecutive naturals, namely, 3185020 + ... + 3185023.

It is an arithmetic number, because the mean of its divisors is an integer number (4777533).

Almost surely, 2^12740086 is an apocalyptic number.

12740086 is a deficient number, since it is larger than the sum of its proper divisors (6370046).

12740086 is an equidigital number, since it uses as much as digits as its factorization.

12740086 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6370045.

The product of its (nonzero) digits is 2688, while the sum is 28.

The square root of 12740086 is about 3569.3257066286. The cubic root of 12740086 is about 233.5558697795. Note that the first 3 decimals are identical.

The spelling of 12740086 in words is "twelve million, seven hundred forty thousand, eighty-six".