1080197 has 4 divisors (see below), whose sum is σ = 1143756. Its totient is φ = 1016640.

The previous prime is 1080173. The next prime is 1080199. The reversal of 1080197 is 7910801.

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

It can be written as a sum of positive squares in 2 ways, for example, as 863041 + 217156 = 929^2 + 466^2 .

It is a cyclic number.

It is not a de Polignac number, because 1080197 - 2¹⁰ = 1079173 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1080199) 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, 31754 + ... + 31787.

It is an arithmetic number, because the mean of its divisors is an integer number (285939).

2^1080197 is an apocalyptic number.

1080197 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

1080197 is a deficient number, since it is larger than the sum of its proper divisors (63559).

1080197 is an equidigital number, since it uses as much as digits as its factorization.

1080197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63558.

The product of its (nonzero) digits is 504, while the sum is 26.

The square root of 1080197 is about 1039.3252618887. The cubic root of 1080197 is about 102.6047946669.

Adding to 1080197 its reverse (7910801), we get a palindrome (8990998).

The spelling of 1080197 in words is "one million, eighty thousand, one hundred ninety-seven".