1080643 has 6 divisors (see below), whose sum is σ = 1105476. Its totient is φ = 1056132.

The previous prime is 1080613. The next prime is 1080647. The reversal of 1080643 is 3460801.

It is a de Polignac number, because none of the positive numbers 2^k-1080643 is a prime.

It is a Duffinian number.

1080643 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1080647) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8446 + ... + 8572.

It is an arithmetic number, because the mean of its divisors is an integer number (184246).

2^1080643 is an apocalyptic number.

1080643 is a deficient number, since it is larger than the sum of its proper divisors (24833).

1080643 is an frugal number, since it uses more digits than its factorization.

1080643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 321 (or 194 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 1080643 is about 1039.5398020278. The cubic root of 1080643 is about 102.6189141413.

The spelling of 1080643 in words is "one million, eighty thousand, six hundred forty-three".