1984564 has 12 divisors (see below), whose sum is σ = 3557988. Its totient is φ = 968000.

The previous prime is 1984561. The next prime is 1984571. The reversal of 1984564 is 4654891.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1192464 + 792100 = 1092^2 + 890^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1984561) 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, 5887 + ... + 6214.

It is an arithmetic number, because the mean of its divisors is an integer number (296499).

2^1984564 is an apocalyptic number.

It is an amenable number.

1984564 is a deficient number, since it is larger than the sum of its proper divisors (1573424).

1984564 is a wasteful number, since it uses less digits than its factorization.

1984564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12146 (or 12144 counting only the distinct ones).

The product of its digits is 34560, while the sum is 37.

The square root of 1984564 is about 1408.7455412529. The cubic root of 1984564 is about 125.6671318136.

The spelling of 1984564 in words is "one million, nine hundred eighty-four thousand, five hundred sixty-four".