12661310 has 16 divisors (see below), whose sum is σ = 23005296. Its totient is φ = 5016768.

The previous prime is 12661303. The next prime is 12661321. The reversal of 12661310 is 1316621.

It is a super-2 number, since 2×12661310² = 320617541832200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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, 4847 + ... + 6986.

It is an arithmetic number, because the mean of its divisors is an integer number (1437831).

Almost surely, 2^12661310 is an apocalyptic number.

12661310 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12661310 is a deficient number, since it is larger than the sum of its proper divisors (10343986).

12661310 is a wasteful number, since it uses less digits than its factorization.

12661310 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11947.

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 12661310 is about 3558.2734577320. The cubic root of 12661310 is about 233.0734907893.

Adding to 12661310 its reverse (1316621), we get a palindrome (13977931).

The spelling of 12661310 in words is "twelve million, six hundred sixty-one thousand, three hundred ten".