1256648 has 8 divisors (see below), whose sum is σ = 2356230. Its totient is φ = 628320.

The previous prime is 1256621. The next prime is 1256659. The reversal of 1256648 is 8466521.

It can be written as a sum of positive squares in only one way, i.e., 1249924 + 6724 = 1118^2 + 82^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78533 + ... + 78548.

2^1256648 is an apocalyptic number.

It is an amenable number.

1256648 is a deficient number, since it is larger than the sum of its proper divisors (1099582).

1256648 is a wasteful number, since it uses less digits than its factorization.

1256648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157087 (or 157083 counting only the distinct ones).

The product of its digits is 11520, while the sum is 32.

The square root of 1256648 is about 1121.0031222080. The cubic root of 1256648 is about 107.9123660393.

The spelling of 1256648 in words is "one million, two hundred fifty-six thousand, six hundred forty-eight".