1312966 has 4 divisors (see below), whose sum is σ = 1969452. Its totient is φ = 656482.

The previous prime is 1312963. The next prime is 1312967. The reversal of 1312966 is 6692131.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1312963) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 328240 + ... + 328243.

It is an arithmetic number, because the mean of its divisors is an integer number (492363).

2^1312966 is an apocalyptic number.

1312966 is a deficient number, since it is larger than the sum of its proper divisors (656486).

1312966 is an equidigital number, since it uses as much as digits as its factorization.

1312966 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 656485.

The product of its digits is 1944, while the sum is 28.

The square root of 1312966 is about 1145.8472847635. The cubic root of 1312966 is about 109.5009347793.

It can be divided in two parts, 1312 and 966, that added together give a triangular number (2278 = T₆₇).

The spelling of 1312966 in words is "one million, three hundred twelve thousand, nine hundred sixty-six".