1198669 has 2 divisors, whose sum is σ = 1198670. Its totient is φ = 1198668.

The previous prime is 1198661. The next prime is 1198679. The reversal of 1198669 is 9668911.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 743044 + 455625 = 862^2 + 675^2 .

It is a cyclic number.

It is not a de Polignac number, because 1198669 - 2³ = 1198661 is a prime.

It is a super-2 number, since 2×1198669² = 2873614743122, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1198661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 599334 + 599335.

It is an arithmetic number, because the mean of its divisors is an integer number (599335).

2^1198669 is an apocalyptic number.

It is an amenable number.

1198669 is a deficient number, since it is larger than the sum of its proper divisors (1).

1198669 is an equidigital number, since it uses as much as digits as its factorization.

1198669 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 23328, while the sum is 40.

The square root of 1198669 is about 1094.8374308545. The cubic root of 1198669 is about 106.2265535346.

The spelling of 1198669 in words is "one million, one hundred ninety-eight thousand, six hundred sixty-nine".