1297644 has 24 divisors (see below), whose sum is σ = 3206448. Its totient is φ = 407040.

The previous prime is 1297633. The next prime is 1297649. The reversal of 1297644 is 4467921.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1297649) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2977 + ... + 3384.

It is an arithmetic number, because the mean of its divisors is an integer number (133602).

2^1297644 is an apocalyptic number.

It is an amenable number.

1297644 is an abundant number, since it is smaller than the sum of its proper divisors (1908804).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1297644 is a wasteful number, since it uses less digits than its factorization.

1297644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6385 (or 6383 counting only the distinct ones).

The product of its digits is 12096, while the sum is 33.

The square root of 1297644 is about 1139.1417822203. The cubic root of 1297644 is about 109.0733171128.

The spelling of 1297644 in words is "one million, two hundred ninety-seven thousand, six hundred forty-four".