12720964 has 12 divisors (see below), whose sum is σ = 23571324. Its totient is φ = 5986304.

The previous prime is 12720949. The next prime is 12720971. The reversal of 12720964 is 46902721.

It can be written as a sum of positive squares in 2 ways, for example, as 6718464 + 6002500 = 2592^2 + 2450^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 93469 + ... + 93604.

It is an arithmetic number, because the mean of its divisors is an integer number (1964277).

Almost surely, 2^12720964 is an apocalyptic number.

It is an amenable number.

12720964 is a deficient number, since it is larger than the sum of its proper divisors (10850360).

12720964 is a wasteful number, since it uses less digits than its factorization.

12720964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187094 (or 187092 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 12720964 is about 3566.6460435541. The cubic root of 12720964 is about 233.4389607932.

It can be divided in two parts, 12 and 720964, that multiplied together give a palindrome (8651568).

The spelling of 12720964 in words is "twelve million, seven hundred twenty thousand, nine hundred sixty-four".