1080945 has 40 divisors (see below), whose sum is σ = 2064744. Its totient is φ = 539136.

The previous prime is 1080943. The next prime is 1080971. The reversal of 1080945 is 5490801.

It can be written as a sum of positive squares in 4 ways, for example, as 136161 + 944784 = 369^2 + 972^2 .

It is not a de Polignac number, because 1080945 - 2¹ = 1080943 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1080941) 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 39 ways as a sum of consecutive naturals, for example, 6807 + ... + 6963.

2^1080945 is an apocalyptic number.

1080945 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1080945 is a deficient number, since it is larger than the sum of its proper divisors (983799).

1080945 is a wasteful number, since it uses less digits than its factorization.

1080945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191 (or 182 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

The square root of 1080945 is about 1039.6850484642. The cubic root of 1080945 is about 102.6284726559.

It can be divided in two parts, 1080 and 945, that added together give a square (2025 = 45²).

The spelling of 1080945 in words is "one million, eighty thousand, nine hundred forty-five".