1296644 has 6 divisors (see below), whose sum is σ = 2269134. Its totient is φ = 648320.

The previous prime is 1296629. The next prime is 1296649. The reversal of 1296644 is 4466921.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1295044 + 1600 = 1138^2 + 40^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1296644.

It is not an unprimeable number, because it can be changed into a prime (1296649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 162077 + ... + 162084.

It is an arithmetic number, because the mean of its divisors is an integer number (378189).

2^1296644 is an apocalyptic number.

It is an amenable number.

1296644 is a deficient number, since it is larger than the sum of its proper divisors (972490).

1296644 is a wasteful number, since it uses less digits than its factorization.

1296644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 324165 (or 324163 counting only the distinct ones).

The product of its digits is 10368, while the sum is 32.

The square root of 1296644 is about 1138.7027707001. The cubic root of 1296644 is about 109.0452916175.

The spelling of 1296644 in words is "one million, two hundred ninety-six thousand, six hundred forty-four".