1973668 has 12 divisors (see below), whose sum is σ = 3512880. Its totient is φ = 969992.

The previous prime is 1973651. The next prime is 1973669. The reversal of 1973668 is 8663791.

It is a self number, because there is not a number n which added to its sum of digits gives 1973668.

It is not an unprimeable number, because it can be changed into a prime (1973669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3946 + ... + 4417.

It is an arithmetic number, because the mean of its divisors is an integer number (292740).

2^1973668 is an apocalyptic number.

It is an amenable number.

1973668 is a deficient number, since it is larger than the sum of its proper divisors (1539212).

1973668 is a wasteful number, since it uses less digits than its factorization.

1973668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8426 (or 8424 counting only the distinct ones).

The product of its digits is 54432, while the sum is 40.

The square root of 1973668 is about 1404.8729479921. The cubic root of 1973668 is about 125.4367230734.

The spelling of 1973668 in words is "one million, nine hundred seventy-three thousand, six hundred sixty-eight".