12722587 has 8 divisors (see below), whose sum is σ = 13249152. Its totient is φ = 12206400.

The previous prime is 12722573. The next prime is 12722599. The reversal of 12722587 is 78522721.

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 12722587 - 2⁷ = 12722459 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12722287) 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, 43 + ... + 5044.

It is an arithmetic number, because the mean of its divisors is an integer number (1656144).

Almost surely, 2^12722587 is an apocalyptic number.

12722587 is a deficient number, since it is larger than the sum of its proper divisors (526565).

12722587 is an equidigital number, since it uses as much as digits as its factorization.

12722587 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5189.

The product of its digits is 15680, while the sum is 34.

The square root of 12722587 is about 3566.8735609775. The cubic root of 12722587 is about 233.4488881153.

The spelling of 12722587 in words is "twelve million, seven hundred twenty-two thousand, five hundred eighty-seven".