12671667 has 8 divisors (see below), whose sum is σ = 18772880. Its totient is φ = 8447760.

The previous prime is 12671639. The next prime is 12671669. The reversal of 12671667 is 76617621.

12671667 is digitally balanced in base 2, base 3 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12671667 - 2²⁰ = 11623091 is a prime.

It is a super-2 number, since 2×12671667² = 321142289117778, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12671669) 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, 234634 + ... + 234687.

It is an arithmetic number, because the mean of its divisors is an integer number (2346610).

Almost surely, 2^12671667 is an apocalyptic number.

12671667 is a deficient number, since it is larger than the sum of its proper divisors (6101213).

12671667 is an equidigital number, since it uses as much as digits as its factorization.

12671667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 469330 (or 469324 counting only the distinct ones).

The product of its digits is 21168, while the sum is 36.

The square root of 12671667 is about 3559.7285008832. The cubic root of 12671667 is about 233.1370251376.

The spelling of 12671667 in words is "twelve million, six hundred seventy-one thousand, six hundred sixty-seven".