12985723 has 8 divisors (see below), whose sum is σ = 13359600. Its totient is φ = 12617088.

The previous prime is 12985717. The next prime is 12985727. The reversal of 12985723 is 32758921.

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

It is a cyclic number.

It is not a de Polignac number, because 12985723 - 2²¹ = 10888571 is a prime.

It is a super-3 number, since 3×12985723³ (a number of 22 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12985727) 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 7 ways as a sum of consecutive naturals, for example, 4015 + ... + 6487.

It is an arithmetic number, because the mean of its divisors is an integer number (1669950).

Almost surely, 2^12985723 is an apocalyptic number.

12985723 is a deficient number, since it is larger than the sum of its proper divisors (373877).

12985723 is an equidigital number, since it uses as much as digits as its factorization.

12985723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2621.

The product of its digits is 30240, while the sum is 37.

The square root of 12985723 is about 3603.5708679031. The cubic root of 12985723 is about 235.0473603053.

It can be divided in two parts, 1298 and 5723, that added together give a triangular number (7021 = T₁₁₈).

The spelling of 12985723 in words is "twelve million, nine hundred eighty-five thousand, seven hundred twenty-three".