1078985 has 4 divisors (see below), whose sum is σ = 1294788. Its totient is φ = 863184.

The previous prime is 1078981. The next prime is 1078993. The reversal of 1078985 is 5898701.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5898701 = 677 ⋅8713.

It can be written as a sum of positive squares in 2 ways, for example, as 541696 + 537289 = 736^2 + 733^2 .

It is a cyclic number.

It is not a de Polignac number, because 1078985 - 2² = 1078981 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1078981) 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, 107894 + ... + 107903.

It is an arithmetic number, because the mean of its divisors is an integer number (323697).

2^1078985 is an apocalyptic number.

It is an amenable number.

1078985 is a deficient number, since it is larger than the sum of its proper divisors (215803).

1078985 is an equidigital number, since it uses as much as digits as its factorization.

1078985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215802.

The product of its (nonzero) digits is 20160, while the sum is 38.

The square root of 1078985 is about 1038.7420276469. The cubic root of 1078985 is about 102.5664055119.

The spelling of 1078985 in words is "one million, seventy-eight thousand, nine hundred eighty-five".