1984605 has 32 divisors (see below), whose sum is σ = 3725568. Its totient is φ = 883200.

The previous prime is 1984571. The next prime is 1984639. The reversal of 1984605 is 5064891.

It is an interprime number because it is at equal distance from previous prime (1984571) and next prime (1984639).

It is not a de Polignac number, because 1984605 - 2¹⁵ = 1951837 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4075 + ... + 4535.

It is an arithmetic number, because the mean of its divisors is an integer number (116424).

2^1984605 is an apocalyptic number.

1984605 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1984605 is a deficient number, since it is larger than the sum of its proper divisors (1740963).

1984605 is a wasteful number, since it uses less digits than its factorization.

1984605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 517.

The product of its (nonzero) digits is 8640, while the sum is 33.

The square root of 1984605 is about 1408.7600931315. The cubic root of 1984605 is about 125.6679972122.

The spelling of 1984605 in words is "one million, nine hundred eighty-four thousand, six hundred five".