1098065 has 4 divisors (see below), whose sum is σ = 1317684. Its totient is φ = 878448.

The previous prime is 1098037. The next prime is 1098073. The reversal of 1098065 is 5608901.

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 229441 + 868624 = 479^2 + 932^2 .

It is a cyclic number.

It is not a de Polignac number, because 1098065 - 2¹² = 1093969 is a prime.

It is a Duffinian number.

It is a plaindrome in base 7.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 109802 + ... + 109811.

It is an arithmetic number, because the mean of its divisors is an integer number (329421).

2^1098065 is an apocalyptic number.

It is an amenable number.

1098065 is a deficient number, since it is larger than the sum of its proper divisors (219619).

1098065 is an equidigital number, since it uses as much as digits as its factorization.

1098065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219618.

The product of its (nonzero) digits is 2160, while the sum is 29.

The square root of 1098065 is about 1047.8859670785. The cubic root of 1098065 is about 103.1674468666.

The spelling of 1098065 in words is "one million, ninety-eight thousand, sixty-five".