1098867 has 32 divisors (see below), whose sum is σ = 1880064. Its totient is φ = 554400.

The previous prime is 1098847. The next prime is 1098953. The reversal of 1098867 is 7688901.

It is not a de Polignac number, because 1098867 - 2⁶ = 1098803 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1098847) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15442 + ... + 15512.

It is an arithmetic number, because the mean of its divisors is an integer number (58752).

2^1098867 is an apocalyptic number.

1098867 is a deficient number, since it is larger than the sum of its proper divisors (781197).

1098867 is a wasteful number, since it uses less digits than its factorization.

1098867 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159.

The product of its (nonzero) digits is 24192, while the sum is 39.

The square root of 1098867 is about 1048.2685724565. The cubic root of 1098867 is about 103.1925577531.

The spelling of 1098867 in words is "one million, ninety-eight thousand, eight hundred sixty-seven".