12657322 has 4 divisors (see below), whose sum is σ = 18985986. Its totient is φ = 6328660.

The previous prime is 12657319. The next prime is 12657341. The reversal of 12657322 is 22375621.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 22375621 = 17 ⋅1316213.

It can be written as a sum of positive squares in only one way, i.e., 7177041 + 5480281 = 2679^2 + 2341^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3164329 + ... + 3164332.

Almost surely, 2^12657322 is an apocalyptic number.

12657322 is a deficient number, since it is larger than the sum of its proper divisors (6328664).

12657322 is an equidigital number, since it uses as much as digits as its factorization.

12657322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6328663.

The product of its digits is 5040, while the sum is 28.

The square root of 12657322 is about 3557.7130294615. The cubic root of 12657322 is about 233.0490174215.

The spelling of 12657322 in words is "twelve million, six hundred fifty-seven thousand, three hundred twenty-two".