12977966 has 8 divisors (see below), whose sum is σ = 19566360. Its totient is φ = 6455848.

The previous prime is 12977947. The next prime is 12977971. The reversal of 12977966 is 66977921.

12977966 = T₂₆₀ + T₂₆₁ + ... + T₄₅₆.

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

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 12977966.

It is a congruent number.

It is an unprimeable number.

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, 16076 + ... + 16863.

It is an arithmetic number, because the mean of its divisors is an integer number (2445795).

Almost surely, 2^12977966 is an apocalyptic number.

12977966 is a deficient number, since it is larger than the sum of its proper divisors (6588394).

12977966 is a wasteful number, since it uses less digits than its factorization.

12977966 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33138.

The product of its digits is 285768, while the sum is 47.

The square root of 12977966 is about 3602.4944135973. The cubic root of 12977966 is about 235.0005492669. Note that the first 3 decimals are identical.

The spelling of 12977966 in words is "twelve million, nine hundred seventy-seven thousand, nine hundred sixty-six".