1098597 has 4 divisors (see below), whose sum is σ = 1464800. Its totient is φ = 732396.

The previous prime is 1098593. The next prime is 1098613. The reversal of 1098597 is 7958901.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 1098597 - 2² = 1098593 is a prime.

It is a D-number.

It is a Duffinian number.

1098597 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1098593) 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, 183097 + ... + 183102.

It is an arithmetic number, because the mean of its divisors is an integer number (366200).

2^1098597 is an apocalyptic number.

It is an amenable number.

1098597 is a deficient number, since it is larger than the sum of its proper divisors (366203).

1098597 is an equidigital number, since it uses as much as digits as its factorization.

1098597 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 366202.

The product of its (nonzero) digits is 22680, while the sum is 39.

The square root of 1098597 is about 1048.1397807545. The cubic root of 1098597 is about 103.1841053280.

The spelling of 1098597 in words is "one million, ninety-eight thousand, five hundred ninety-seven".