12697019 has 4 divisors (see below), whose sum is σ = 12809496. Its totient is φ = 12584544.

The previous prime is 12696991. The next prime is 12697021. The reversal of 12697019 is 91079621.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12697019 is a prime.

It is a super-2 number, since 2×12697019² = 322428582972722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12697019.

It is not an unprimeable number, because it can be changed into a prime (12697039) 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, 56069 + ... + 56294.

It is an arithmetic number, because the mean of its divisors is an integer number (3202374).

Almost surely, 2^12697019 is an apocalyptic number.

12697019 is a deficient number, since it is larger than the sum of its proper divisors (112477).

12697019 is a wasteful number, since it uses less digits than its factorization.

12697019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112476.

The product of its (nonzero) digits is 6804, while the sum is 35.

The square root of 12697019 is about 3563.2876673095. The cubic root of 12697019 is about 233.2923993953.

The spelling of 12697019 in words is "twelve million, six hundred ninety-seven thousand, nineteen".