1075639 has 6 divisors (see below), whose sum is σ = 1114880. Its totient is φ = 1037736.

The previous prime is 1075621. The next prime is 1075643. The reversal of 1075639 is 9365701.

It is a de Polignac number, because none of the positive numbers 2^k-1075639 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 1075639.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1075619) by changing a digit.

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 in 5 ways as a sum of consecutive naturals, for example, 202 + ... + 1480.

2^1075639 is an apocalyptic number.

1075639 is a deficient number, since it is larger than the sum of its proper divisors (39241).

1075639 is an equidigital number, since it uses as much as digits as its factorization.

1075639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1337 (or 1308 counting only the distinct ones).

The product of its (nonzero) digits is 5670, while the sum is 31.

The square root of 1075639 is about 1037.1301750504. The cubic root of 1075639 is about 102.4602741157.

The spelling of 1075639 in words is "one million, seventy-five thousand, six hundred thirty-nine".