12697205 has 4 divisors (see below), whose sum is σ = 15236652. Its totient is φ = 10157760.

The previous prime is 12697193. The next prime is 12697207. The reversal of 12697205 is 50279621.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1661521 + 11035684 = 1289^2 + 3322^2 .

It is not a de Polignac number, because 12697205 - 2⁴ = 12697189 is a prime.

It is a super-2 number, since 2×12697205² = 322438029624050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12697207) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1269716 + ... + 1269725.

It is an arithmetic number, because the mean of its divisors is an integer number (3809163).

Almost surely, 2^12697205 is an apocalyptic number.

It is an amenable number.

12697205 is a deficient number, since it is larger than the sum of its proper divisors (2539447).

12697205 is an equidigital number, since it uses as much as digits as its factorization.

12697205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2539446.

The product of its (nonzero) digits is 7560, while the sum is 32.

The square root of 12697205 is about 3563.3137667065. The cubic root of 12697205 is about 233.2935385649.

The spelling of 12697205 in words is "twelve million, six hundred ninety-seven thousand, two hundred five".