1098868 has 12 divisors (see below), whose sum is σ = 1989540. Its totient is φ = 530432.

The previous prime is 1098847. The next prime is 1098953. The reversal of 1098868 is 8688901.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 879844 + 219024 = 938^2 + 468^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1098868.

It is a congruent number.

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, 4621 + ... + 4852.

It is an arithmetic number, because the mean of its divisors is an integer number (165795).

2^1098868 is an apocalyptic number.

It is an amenable number.

1098868 is a deficient number, since it is larger than the sum of its proper divisors (890672).

1098868 is a wasteful number, since it uses less digits than its factorization.

1098868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9506 (or 9504 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 40.

The square root of 1098868 is about 1048.2690494334. The cubic root of 1098868 is about 103.1925890558.

The spelling of 1098868 in words is "one million, ninety-eight thousand, eight hundred sixty-eight".