1098667 has 2 divisors, whose sum is σ = 1098668. Its totient is φ = 1098666.

The previous prime is 1098649. The next prime is 1098673. The reversal of 1098667 is 7668901.

It is a strong prime.

It is an emirp because it is prime and its reverse (7668901) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1098667 - 2¹⁵ = 1065899 is a prime.

It is not a weakly prime, because it can be changed into another prime (1098967) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 549333 + 549334.

It is an arithmetic number, because the mean of its divisors is an integer number (549334).

2^1098667 is an apocalyptic number.

1098667 is a deficient number, since it is larger than the sum of its proper divisors (1).

1098667 is an equidigital number, since it uses as much as digits as its factorization.

1098667 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18144, while the sum is 37.

The square root of 1098667 is about 1048.1731727153. The cubic root of 1098667 is about 103.1862968305.

The spelling of 1098667 in words is "one million, ninety-eight thousand, six hundred sixty-seven".