12678011 has 4 divisors (see below), whose sum is σ = 12689832. Its totient is φ = 12666192.

The previous prime is 12677993. The next prime is 12678019. The reversal of 12678011 is 11087621.

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

It is a cyclic number.

It is not a de Polignac number, because 12678011 - 2⁶ = 12677947 is a prime.

It is a super-2 number, since 2×12678011² = 321463925832242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12678019) 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, 4121 + ... + 6506.

It is an arithmetic number, because the mean of its divisors is an integer number (3172458).

Almost surely, 2^12678011 is an apocalyptic number.

12678011 is a deficient number, since it is larger than the sum of its proper divisors (11821).

12678011 is a wasteful number, since it uses less digits than its factorization.

12678011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11820.

The product of its (nonzero) digits is 672, while the sum is 26.

The square root of 12678011 is about 3560.6194685757. The cubic root of 12678011 is about 233.1759249007.

The spelling of 12678011 in words is "twelve million, six hundred seventy-eight thousand, eleven".