12691046 has 8 divisors (see below), whose sum is σ = 19071624. Its totient is φ = 6333840.

The previous prime is 12691043. The next prime is 12691057. The reversal of 12691046 is 64019621.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×12691046² = 322125297148232, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12691043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4415 + ... + 6698.

It is an arithmetic number, because the mean of its divisors is an integer number (2383953).

Almost surely, 2^12691046 is an apocalyptic number.

12691046 is a deficient number, since it is larger than the sum of its proper divisors (6380578).

12691046 is a wasteful number, since it uses less digits than its factorization.

12691046 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11686.

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 12691046 is about 3562.4494382377. The cubic root of 12691046 is about 233.2558114354.

The spelling of 12691046 in words is "twelve million, six hundred ninety-one thousand, forty-six".