1648408 has 8 divisors (see below), whose sum is σ = 3090780. Its totient is φ = 824200.

The previous prime is 1648391. The next prime is 1648417. The reversal of 1648408 is 8048461.

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 1648408.

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, 103018 + ... + 103033.

2^1648408 is an apocalyptic number.

It is an amenable number.

1648408 is a deficient number, since it is larger than the sum of its proper divisors (1442372).

1648408 is a wasteful number, since it uses less digits than its factorization.

1648408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206057 (or 206053 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 31.

The square root of 1648408 is about 1283.9034231592. The cubic root of 1648408 is about 118.1285585371.

The spelling of 1648408 in words is "one million, six hundred forty-eight thousand, four hundred eight".