1998466 has 4 divisors (see below), whose sum is σ = 2997702. Its totient is φ = 999232.

The previous prime is 1998457. The next prime is 1998473. The reversal of 1998466 is 6648991.

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

It can be written as a sum of positive squares in only one way, i.e., 1946025 + 52441 = 1395^2 + 229^2 .

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, 499615 + ... + 499618.

2^1998466 is an apocalyptic number.

1998466 is a deficient number, since it is larger than the sum of its proper divisors (999236).

1998466 is an equidigital number, since it uses as much as digits as its factorization.

1998466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 999235.

The product of its digits is 93312, while the sum is 43.

The square root of 1998466 is about 1413.6711074362. The cubic root of 1998466 is about 125.9598847689.

The spelling of 1998466 in words is "one million, nine hundred ninety-eight thousand, four hundred sixty-six".