1078609 has 4 divisors (see below), whose sum is σ = 1232704. Its totient is φ = 924516.

The previous prime is 1078589. The next prime is 1078643. The reversal of 1078609 is 9068701.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 9068701 = 17 ⋅533453.

It is a cyclic number.

It is not a de Polignac number, because 1078609 - 2¹³ = 1070417 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1078699) 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, 77037 + ... + 77050.

It is an arithmetic number, because the mean of its divisors is an integer number (308176).

2^1078609 is an apocalyptic number.

It is an amenable number.

1078609 is a deficient number, since it is larger than the sum of its proper divisors (154095).

1078609 is an equidigital number, since it uses as much as digits as its factorization.

1078609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154094.

The product of its (nonzero) digits is 3024, while the sum is 31.

The square root of 1078609 is about 1038.5610237247. The cubic root of 1078609 is about 102.5544901627.

The spelling of 1078609 in words is "one million, seventy-eight thousand, six hundred nine".