12712649 has 8 divisors (see below), whose sum is σ = 13073280. Its totient is φ = 12355056.

The previous prime is 12712627. The next prime is 12712657. The reversal of 12712649 is 94621721.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 12712649 - 2⁸ = 12712393 is a prime.

It is a super-2 number, since 2×12712649² = 323222889194402, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12712619) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9659 + ... + 10895.

It is an arithmetic number, because the mean of its divisors is an integer number (1634160).

Almost surely, 2^12712649 is an apocalyptic number.

It is an amenable number.

12712649 is a deficient number, since it is larger than the sum of its proper divisors (360631).

12712649 is a wasteful number, since it uses less digits than its factorization.

12712649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1519.

The product of its digits is 6048, while the sum is 32.

The square root of 12712649 is about 3565.4801920639. The cubic root of 12712649 is about 233.3880876038.

The spelling of 12712649 in words is "twelve million, seven hundred twelve thousand, six hundred forty-nine".