1121668 has 12 divisors (see below), whose sum is σ = 1995532. Its totient is φ = 551520.

The previous prime is 1121651. The next prime is 1121671. The reversal of 1121668 is 8661211.

It can be written as a sum of positive squares in 2 ways, for example, as 56644 + 1065024 = 238^2 + 1032^2 .

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, 2055 + ... + 2542.

2^1121668 is an apocalyptic number.

It is an amenable number.

1121668 is a deficient number, since it is larger than the sum of its proper divisors (873864).

1121668 is a wasteful number, since it uses less digits than its factorization.

1121668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4662 (or 4660 counting only the distinct ones).

The product of its digits is 576, while the sum is 25.

The square root of 1121668 is about 1059.0882871602. The cubic root of 1121668 is about 103.9014105139.

Adding to 1121668 its reverse (8661211), we get a palindrome (9782879).

The spelling of 1121668 in words is "one million, one hundred twenty-one thousand, six hundred sixty-eight".