12495987 has 12 divisors (see below), whose sum is σ = 20628400. Its totient is φ = 7140528.

The previous prime is 12495971. The next prime is 12495991. The reversal of 12495987 is 78959421.

12495987 is a `hidden beast` number, since 12 + 49 + 598 + 7 = 666.

It is not a de Polignac number, because 12495987 - 2⁴ = 12495971 is a prime.

It is a super-2 number, since 2×12495987² = 312299382208338, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12495487) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 99112 + ... + 99237.

Almost surely, 2^12495987 is an apocalyptic number.

12495987 is a deficient number, since it is larger than the sum of its proper divisors (8132413).

12495987 is a wasteful number, since it uses less digits than its factorization.

12495987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198362 (or 198359 counting only the distinct ones).

The product of its digits is 181440, while the sum is 45.

The square root of 12495987 is about 3534.9663364734. The cubic root of 12495987 is about 232.0546034278.

The spelling of 12495987 in words is "twelve million, four hundred ninety-five thousand, nine hundred eighty-seven".