1992668 has 6 divisors (see below), whose sum is σ = 3487176. Its totient is φ = 996332.

The previous prime is 1992643. The next prime is 1992673. The reversal of 1992668 is 8662991.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 249080 + ... + 249087.

It is an arithmetic number, because the mean of its divisors is an integer number (581196).

2^1992668 is an apocalyptic number.

It is an amenable number.

1992668 is a deficient number, since it is larger than the sum of its proper divisors (1494508).

1992668 is a wasteful number, since it uses less digits than its factorization.

1992668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 498171 (or 498169 counting only the distinct ones).

The product of its digits is 46656, while the sum is 41.

The square root of 1992668 is about 1411.6189287481. The cubic root of 1992668 is about 125.8379541111.

The spelling of 1992668 in words is "one million, nine hundred ninety-two thousand, six hundred sixty-eight".