12997258 has 4 divisors (see below), whose sum is σ = 19495890. Its totient is φ = 6498628.

The previous prime is 12997253. The next prime is 12997279. The reversal of 12997258 is 85279921.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 85279921 = 197 ⋅432893.

It can be written as a sum of positive squares in only one way, i.e., 10647169 + 2350089 = 3263^2 + 1533^2 .

It is not an unprimeable number, because it can be changed into a prime (12997253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3249313 + ... + 3249316.

Almost surely, 2^12997258 is an apocalyptic number.

12997258 is a deficient number, since it is larger than the sum of its proper divisors (6498632).

12997258 is an equidigital number, since it uses as much as digits as its factorization.

12997258 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6498631.

The product of its digits is 90720, while the sum is 43.

The square root of 12997258 is about 3605.1710084266. The cubic root of 12997258 is about 235.1169359181.

The spelling of 12997258 in words is "twelve million, nine hundred ninety-seven thousand, two hundred fifty-eight".