1648885 has 8 divisors (see below), whose sum is σ = 2261376. Its totient is φ = 1130640.

The previous prime is 1648879. The next prime is 1648909. The reversal of 1648885 is 5888461.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1648885 - 2¹⁹ = 1124597 is a prime.

It is a Duffinian number.

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 7 ways as a sum of consecutive naturals, for example, 23521 + ... + 23590.

It is an arithmetic number, because the mean of its divisors is an integer number (282672).

2^1648885 is an apocalyptic number.

It is an amenable number.

1648885 is a deficient number, since it is larger than the sum of its proper divisors (612491).

1648885 is an equidigital number, since it uses as much as digits as its factorization.

1648885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47123.

The product of its digits is 61440, while the sum is 40.

The square root of 1648885 is about 1284.0891713584. The cubic root of 1648885 is about 118.1399517295.

Adding to 1648885 its product of digits (61440), we get a triangular number (1710325 = T₁₈₄₉).

The spelling of 1648885 in words is "one million, six hundred forty-eight thousand, eight hundred eighty-five".