12966558 has 32 divisors (see below), whose sum is σ = 28449792. Its totient is φ = 3907200.

The previous prime is 12966557. The next prime is 12966559. The reversal of 12966558 is 85566921.

It is an interprime number because it is at equal distance from previous prime (12966557) and next prime (12966559).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12966557) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14278 + ... + 15158.

It is an arithmetic number, because the mean of its divisors is an integer number (889056).

Almost surely, 2^12966558 is an apocalyptic number.

12966558 is an abundant number, since it is smaller than the sum of its proper divisors (15483234).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12966558 is a wasteful number, since it uses less digits than its factorization.

12966558 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1120.

The product of its digits is 129600, while the sum is 42.

The square root of 12966558 is about 3600.9107181378. The cubic root of 12966558 is about 234.9316716997.

The spelling of 12966558 in words is "twelve million, nine hundred sixty-six thousand, five hundred fifty-eight".