12587506 has 4 divisors (see below), whose sum is σ = 18881262. Its totient is φ = 6293752.

The previous prime is 12587503. The next prime is 12587507. The reversal of 12587506 is 60578521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 60578521 = 7489 ⋅8089.

It can be written as a sum of positive squares in only one way, i.e., 9979281 + 2608225 = 3159^2 + 1615^2 .

It is not an unprimeable number, because it can be changed into a prime (12587501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3146875 + ... + 3146878.

Almost surely, 2^12587506 is an apocalyptic number.

12587506 is a deficient number, since it is larger than the sum of its proper divisors (6293756).

12587506 is an equidigital number, since it uses as much as digits as its factorization.

12587506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6293755.

The product of its (nonzero) digits is 16800, while the sum is 34.

The square root of 12587506 is about 3547.8875404950. The cubic root of 12587506 is about 232.6197386857.

The spelling of 12587506 in words is "twelve million, five hundred eighty-seven thousand, five hundred six".