1998064 has 20 divisors (see below), whose sum is σ = 3955104. Its totient is φ = 977408.

The previous prime is 1998049. The next prime is 1998067. The reversal of 1998064 is 4608991.

It is a zygodrome in base 2 and base 7.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1998067) 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, 577 + ... + 2080.

2^1998064 is an apocalyptic number.

It is an amenable number.

1998064 is a deficient number, since it is larger than the sum of its proper divisors (1957040).

1998064 is a wasteful number, since it uses less digits than its factorization.

1998064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2712 (or 2706 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 37.

The square root of 1998064 is about 1413.5289172847. The cubic root of 1998064 is about 125.9514384124.

It can be divided in two parts, 199 and 8064, that multiplied together give a triangular number (1604736 = T₁₇₉₁).

The spelling of 1998064 in words is "one million, nine hundred ninety-eight thousand, sixty-four".