12966247 has 6 divisors (see below), whose sum is σ = 14829464. Its totient is φ = 11105760.

The previous prime is 12966241. The next prime is 12966269. The reversal of 12966247 is 74266921.

It is not a de Polignac number, because 12966247 - 2⁷ = 12966119 is a prime.

It is a super-2 number, since 2×12966247² = 336247122530018, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12966241) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8847 + ... + 10207.

Almost surely, 2^12966247 is an apocalyptic number.

12966247 is a deficient number, since it is larger than the sum of its proper divisors (1863217).

12966247 is an frugal number, since it uses more digits than its factorization.

12966247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2729 (or 1368 counting only the distinct ones).

The product of its digits is 36288, while the sum is 37.

The square root of 12966247 is about 3600.8675343589. The cubic root of 12966247 is about 234.9297934234.

Multiplying 12966247 by its product of digits (36288), we get a square (470519171136 = 685944²).

The spelling of 12966247 in words is "twelve million, nine hundred sixty-six thousand, two hundred forty-seven".