12720673 has 8 divisors (see below), whose sum is σ = 14582592. Its totient is φ = 10869936.

The previous prime is 12720649. The next prime is 12720707. The reversal of 12720673 is 37602721.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12720673 - 2⁹ = 12720161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12720073) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 190 + ... + 5047.

It is an arithmetic number, because the mean of its divisors is an integer number (1822824).

Almost surely, 2^12720673 is an apocalyptic number.

It is an amenable number.

12720673 is a deficient number, since it is larger than the sum of its proper divisors (1861919).

12720673 is an equidigital number, since it uses as much as digits as its factorization.

12720673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5591.

The product of its (nonzero) digits is 3528, while the sum is 28.

The square root of 12720673 is about 3566.6052486924. The cubic root of 12720673 is about 233.4371807589.

The spelling of 12720673 in words is "twelve million, seven hundred twenty thousand, six hundred seventy-three".