1098866 has 8 divisors (see below), whose sum is σ = 1657260. Its totient is φ = 546448.

The previous prime is 1098847. The next prime is 1098953. The reversal of 1098866 is 6688901.

It can be written as a sum of positive squares in 2 ways, for example, as 942841 + 156025 = 971^2 + 395^2 .

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

It is a Curzon number.

It is a plaindrome in base 7.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1001 + ... + 1788.

2^1098866 is an apocalyptic number.

1098866 is a deficient number, since it is larger than the sum of its proper divisors (558394).

1098866 is a wasteful number, since it uses less digits than its factorization.

1098866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2988.

The product of its (nonzero) digits is 20736, while the sum is 38.

The square root of 1098866 is about 1048.2680954794. The cubic root of 1098866 is about 103.1925264504.

The spelling of 1098866 in words is "one million, ninety-eight thousand, eight hundred sixty-six".