12667977 has 24 divisors (see below), whose sum is σ = 21026304. Its totient is φ = 7199424.

The previous prime is 12667969. The next prime is 12667987. The reversal of 12667977 is 77976621.

It is not a de Polignac number, because 12667977 - 2³ = 12667969 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12667937) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14248 + ... + 15110.

It is an arithmetic number, because the mean of its divisors is an integer number (876096).

Almost surely, 2^12667977 is an apocalyptic number.

It is an amenable number.

12667977 is a deficient number, since it is larger than the sum of its proper divisors (8358327).

12667977 is a wasteful number, since it uses less digits than its factorization.

12667977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1109 (or 1106 counting only the distinct ones).

The product of its digits is 222264, while the sum is 45.

The square root of 12667977 is about 3559.2101651911. The cubic root of 12667977 is about 233.1143930419.

It can be divided in two parts, 126679 and 77, that added together give a triangular number (126756 = T₅₀₃).

The spelling of 12667977 in words is "twelve million, six hundred sixty-seven thousand, nine hundred seventy-seven".