1992666 has 32 divisors (see below), whose sum is σ = 4374720. Its totient is φ = 601344.

The previous prime is 1992643. The next prime is 1992673. The reversal of 1992666 is 6662991.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4386 + ... + 4818.

It is an arithmetic number, because the mean of its divisors is an integer number (136710).

2^1992666 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1992666, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2187360).

1992666 is an abundant number, since it is smaller than the sum of its proper divisors (2382054).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1992666 is a wasteful number, since it uses less digits than its factorization.

1992666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 510.

The product of its digits is 34992, while the sum is 39.

The square root of 1992666 is about 1411.6182203415. The cubic root of 1992666 is about 125.8379120107.

The spelling of 1992666 in words is "one million, nine hundred ninety-two thousand, six hundred sixty-six".