1005722 has 4 divisors (see below), whose sum is σ = 1508586. Its totient is φ = 502860.

The previous prime is 1005709. The next prime is 1005751. The reversal of 1005722 is 2275001.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1002001 + 3721 = 1001^2 + 61^2 .

It is a super-2 number, since 2×1005722² = 2022953482568, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1005722.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 251429 + ... + 251432.

2^1005722 is an apocalyptic number.

1005722 is a deficient number, since it is larger than the sum of its proper divisors (502864).

1005722 is an equidigital number, since it uses as much as digits as its factorization.

1005722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 502863.

The product of its (nonzero) digits is 140, while the sum is 17.

The square root of 1005722 is about 1002.8569190069. The cubic root of 1005722 is about 100.1903706934.

The spelling of 1005722 in words is "one million, five thousand, seven hundred twenty-two".