12668015 has 8 divisors (see below), whose sum is σ = 15555408. Its totient is φ = 9898560.

The previous prime is 12667999. The next prime is 12668021. The reversal of 12668015 is 51086621.

12668015 = T₇₄₆ + T₇₄₇ + ... + T₇₈₈.

It is a happy number.

12668015 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 12668015 - 2⁴ = 12667999 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29246 + ... + 29675.

It is an arithmetic number, because the mean of its divisors is an integer number (1944426).

Almost surely, 2^12668015 is an apocalyptic number.

12668015 is a deficient number, since it is larger than the sum of its proper divisors (2887393).

12668015 is an equidigital number, since it uses as much as digits as its factorization.

12668015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58969.

The product of its (nonzero) digits is 2880, while the sum is 29.

The square root of 12668015 is about 3559.2155034502. The cubic root of 12668015 is about 233.1146261319.

The spelling of 12668015 in words is "twelve million, six hundred sixty-eight thousand, fifteen".