12756401 has 8 divisors (see below), whose sum is σ = 14723904. Its totient is φ = 10825200.

The previous prime is 12756389. The next prime is 12756413. The reversal of 12756401 is 10465721.

It is an interprime number because it is at equal distance from previous prime (12756389) and next prime (12756413).

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 12756401 - 2¹⁴ = 12740017 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12756431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8315 + ... + 9728.

It is an arithmetic number, because the mean of its divisors is an integer number (1840488).

Almost surely, 2^12756401 is an apocalyptic number.

It is an amenable number.

12756401 is a deficient number, since it is larger than the sum of its proper divisors (1967503).

12756401 is a wasteful number, since it uses less digits than its factorization.

12756401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18151.

The product of its (nonzero) digits is 1680, while the sum is 26.

The square root of 12756401 is about 3571.6104210846. The cubic root of 12756401 is about 233.6555247480.

The spelling of 12756401 in words is "twelve million, seven hundred fifty-six thousand, four hundred one".