1098668 has 6 divisors (see below), whose sum is σ = 1922676. Its totient is φ = 549332.

The previous prime is 1098667. The next prime is 1098673. The reversal of 1098668 is 8668901.

It is not an unprimeable number, because it can be changed into a prime (1098667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 137330 + ... + 137337.

It is an arithmetic number, because the mean of its divisors is an integer number (320446).

2^1098668 is an apocalyptic number.

It is an amenable number.

1098668 is a deficient number, since it is larger than the sum of its proper divisors (824008).

1098668 is a wasteful number, since it uses less digits than its factorization.

1098668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 274671 (or 274669 counting only the distinct ones).

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

The square root of 1098668 is about 1048.1736497356. The cubic root of 1098668 is about 103.1863281370.

The spelling of 1098668 in words is "one million, ninety-eight thousand, six hundred sixty-eight".