1098215 has 8 divisors (see below), whose sum is σ = 1327200. Its totient is φ = 872352.

The previous prime is 1098211. The next prime is 1098221. The reversal of 1098215 is 5128901.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1098215 - 2² = 1098211 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1098211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 86 + ... + 1484.

It is an arithmetic number, because the mean of its divisors is an integer number (165900).

2^1098215 is an apocalyptic number.

1098215 is a deficient number, since it is larger than the sum of its proper divisors (228985).

1098215 is a wasteful number, since it uses less digits than its factorization.

1098215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1561.

The product of its (nonzero) digits is 720, while the sum is 26.

The square root of 1098215 is about 1047.9575373077. The cubic root of 1098215 is about 103.1721443458.

The spelling of 1098215 in words is "one million, ninety-eight thousand, two hundred fifteen".