12750987 has 4 divisors (see below), whose sum is σ = 17001320. Its totient is φ = 8500656.

The previous prime is 12750911. The next prime is 12750989. The reversal of 12750987 is 78905721.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 12750987 - 2¹⁸ = 12488843 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12750989) 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, 2125162 + ... + 2125167.

It is an arithmetic number, because the mean of its divisors is an integer number (4250330).

Almost surely, 2^12750987 is an apocalyptic number.

12750987 is a deficient number, since it is larger than the sum of its proper divisors (4250333).

12750987 is an equidigital number, since it uses as much as digits as its factorization.

12750987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4250332.

The product of its (nonzero) digits is 35280, while the sum is 39.

The square root of 12750987 is about 3570.8524192411. The cubic root of 12750987 is about 233.6224644824.

The spelling of 12750987 in words is "twelve million, seven hundred fifty thousand, nine hundred eighty-seven".