1070639 has 4 divisors (see below), whose sum is σ = 1073160. Its totient is φ = 1068120.

The previous prime is 1070621. The next prime is 1070659. The reversal of 1070639 is 9360701.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1070639 - 2²⁰ = 22063 is a prime.

It is a super-2 number, since 2×1070639² = 2292535736642, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1070659) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 449 + ... + 1530.

It is an arithmetic number, because the mean of its divisors is an integer number (268290).

2^1070639 is an apocalyptic number.

1070639 is a deficient number, since it is larger than the sum of its proper divisors (2521).

1070639 is an equidigital number, since it uses as much as digits as its factorization.

1070639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2520.

The product of its (nonzero) digits is 1134, while the sum is 26.

The square root of 1070639 is about 1034.7168694865. The cubic root of 1070639 is about 102.3012687180.

The spelling of 1070639 in words is "one million, seventy thousand, six hundred thirty-nine".