12697805 has 8 divisors (see below), whose sum is σ = 15257112. Its totient is φ = 10145088.

The previous prime is 12697799. The next prime is 12697807. The reversal of 12697805 is 50879621.

It can be written as a sum of positive squares in 4 ways, for example, as 2540836 + 10156969 = 1594^2 + 3187^2 .

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 12697805 - 2¹⁰ = 12696781 is a prime.

It is a super-2 number, since 2×12697805² = 322468503636050, 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 (12697807) 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, 5159 + ... + 7211.

It is an arithmetic number, because the mean of its divisors is an integer number (1907139).

Almost surely, 2^12697805 is an apocalyptic number.

It is an amenable number.

12697805 is a deficient number, since it is larger than the sum of its proper divisors (2559307).

12697805 is a wasteful number, since it uses less digits than its factorization.

12697805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3295.

The product of its (nonzero) digits is 30240, while the sum is 38.

The square root of 12697805 is about 3563.3979570068. The cubic root of 12697805 is about 233.2972132297.

The spelling of 12697805 in words is "twelve million, six hundred ninety-seven thousand, eight hundred five".