1668836 has 24 divisors (see below), whose sum is σ = 3198720. Its totient is φ = 757152.

The previous prime is 1668833. The next prime is 1668847. The reversal of 1668836 is 6388661.

It is a self number, because there is not a number n which added to its sum of digits gives 1668836.

It is not an unprimeable number, because it can be changed into a prime (1668833) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3245 + ... + 3723.

It is an arithmetic number, because the mean of its divisors is an integer number (133280).

2^1668836 is an apocalyptic number.

It is an amenable number.

1668836 is a deficient number, since it is larger than the sum of its proper divisors (1529884).

1668836 is a wasteful number, since it uses less digits than its factorization.

1668836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 563 (or 561 counting only the distinct ones).

The product of its digits is 41472, while the sum is 38.

The square root of 1668836 is about 1291.8343547065. The cubic root of 1668836 is about 118.6145284288.

The spelling of 1668836 in words is "one million, six hundred sixty-eight thousand, eight hundred thirty-six".