1988067 has 4 divisors (see below), whose sum is σ = 2650760. Its totient is φ = 1325376.

The previous prime is 1988057. The next prime is 1988087. The reversal of 1988067 is 7608891.

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

It is not a de Polignac number, because 1988067 - 2⁷ = 1987939 is a prime.

It is an Ulam number.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1988057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 331342 + ... + 331347.

It is an arithmetic number, because the mean of its divisors is an integer number (662690).

2^1988067 is an apocalyptic number.

1988067 is a deficient number, since it is larger than the sum of its proper divisors (662693).

1988067 is an equidigital number, since it uses as much as digits as its factorization.

1988067 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 662692.

The product of its (nonzero) digits is 24192, while the sum is 39.

The square root of 1988067 is about 1409.9882978238. The cubic root of 1988067 is about 125.7410276764.

The spelling of 1988067 in words is "one million, nine hundred eighty-eight thousand, sixty-seven".