1074639 has 4 divisors (see below), whose sum is σ = 1432856. Its totient is φ = 716424.

The previous prime is 1074617. The next prime is 1074641. The reversal of 1074639 is 9364701.

It is a happy number.

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

It is not a de Polignac number, because 1074639 - 2⁵ = 1074607 is a prime.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1074649) 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 3 ways as a sum of consecutive naturals, for example, 179104 + ... + 179109.

It is an arithmetic number, because the mean of its divisors is an integer number (358214).

2^1074639 is an apocalyptic number.

1074639 is a deficient number, since it is larger than the sum of its proper divisors (358217).

1074639 is an equidigital number, since it uses as much as digits as its factorization.

1074639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 358216.

The product of its (nonzero) digits is 4536, while the sum is 30.

The square root of 1074639 is about 1036.6479633897. The cubic root of 1074639 is about 102.4285125171.

The spelling of 1074639 in words is "one million, seventy-four thousand, six hundred thirty-nine".