12582649 has 2 divisors, whose sum is σ = 12582650. Its totient is φ = 12582648.

The previous prime is 12582643. The next prime is 12582659. The reversal of 12582649 is 94628521.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8037225 + 4545424 = 2835^2 + 2132^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12582649 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (12582643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6291324 + 6291325.

It is an arithmetic number, because the mean of its divisors is an integer number (6291325).

Almost surely, 2^12582649 is an apocalyptic number.

It is an amenable number.

12582649 is a deficient number, since it is larger than the sum of its proper divisors (1).

12582649 is an equidigital number, since it uses as much as digits as its factorization.

12582649 is an evil number, because the sum of its binary digits is even.

The product of its digits is 34560, while the sum is 37.

The square root of 12582649 is about 3547.2029826329. The cubic root of 12582649 is about 232.5898153786.

It can be divided in two parts, 12582 and 649, that added together give a palindrome (13231).

The spelling of 12582649 in words is "twelve million, five hundred eighty-two thousand, six hundred forty-nine".