1248865 has 8 divisors (see below), whose sum is σ = 1514088. Its totient is φ = 988800.

The previous prime is 1248859. The next prime is 1248869. The reversal of 1248865 is 5688421.

It can be written as a sum of positive squares in 4 ways, for example, as 571536 + 677329 = 756^2 + 823^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1248865 - 2³ = 1248857 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1248865.

It is not an unprimeable number, because it can be changed into a prime (1248869) 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, 732 + ... + 1741.

It is an arithmetic number, because the mean of its divisors is an integer number (189261).

2^1248865 is an apocalyptic number.

It is an amenable number.

1248865 is a deficient number, since it is larger than the sum of its proper divisors (265223).

1248865 is a wasteful number, since it uses less digits than its factorization.

1248865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2579.

The product of its digits is 15360, while the sum is 34.

The square root of 1248865 is about 1117.5262860443. The cubic root of 1248865 is about 107.6891208502.

The spelling of 1248865 in words is "one million, two hundred forty-eight thousand, eight hundred sixty-five".