1992667 has 4 divisors (see below), whose sum is σ = 1995840. Its totient is φ = 1989496.

The previous prime is 1992643. The next prime is 1992673. The reversal of 1992667 is 7662991.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1992667 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1992637) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 292 + ... + 2017.

It is an arithmetic number, because the mean of its divisors is an integer number (498960).

2^1992667 is an apocalyptic number.

1992667 is a deficient number, since it is larger than the sum of its proper divisors (3173).

1992667 is an equidigital number, since it uses as much as digits as its factorization.

1992667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3172.

The product of its digits is 40824, while the sum is 40.

The square root of 1992667 is about 1411.6185745448. The cubic root of 1992667 is about 125.8379330609.

The spelling of 1992667 in words is "one million, nine hundred ninety-two thousand, six hundred sixty-seven".