12747656 has 16 divisors (see below), whose sum is σ = 23965200. Its totient is φ = 6356944.

The previous prime is 12747653. The next prime is 12747697. The reversal of 12747656 is 65674721.

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (12747653) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1451 + ... + 5253.

It is an arithmetic number, because the mean of its divisors is an integer number (1497825).

Almost surely, 2^12747656 is an apocalyptic number.

It is an amenable number.

12747656 is a deficient number, since it is larger than the sum of its proper divisors (11217544).

12747656 is a wasteful number, since it uses less digits than its factorization.

12747656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4228 (or 4224 counting only the distinct ones).

The product of its digits is 70560, while the sum is 38.

The square root of 12747656 is about 3570.3859735328. The cubic root of 12747656 is about 233.6021192808.

The spelling of 12747656 in words is "twelve million, seven hundred forty-seven thousand, six hundred fifty-six".