1262864 has 10 divisors (see below), whose sum is σ = 2446830. Its totient is φ = 631424.

The previous prime is 1262851. The next prime is 1262869. The reversal of 1262864 is 4682621.

It can be written as a sum of positive squares in only one way, i.e., 1254400 + 8464 = 1120^2 + 92^2 .

It is not an unprimeable number, because it can be changed into a prime (1262869) 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, 39449 + ... + 39480.

It is an arithmetic number, because the mean of its divisors is an integer number (244683).

2^1262864 is an apocalyptic number.

It is an amenable number.

1262864 is a deficient number, since it is larger than the sum of its proper divisors (1183966).

1262864 is an equidigital number, since it uses as much as digits as its factorization.

1262864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78937 (or 78931 counting only the distinct ones).

The product of its digits is 4608, while the sum is 29.

The square root of 1262864 is about 1123.7722189127. The cubic root of 1262864 is about 108.0900027067.

The spelling of 1262864 in words is "one million, two hundred sixty-two thousand, eight hundred sixty-four".