1648401 has 16 divisors (see below), whose sum is σ = 2284800. Its totient is φ = 1056528.

The previous prime is 1648391. The next prime is 1648417. The reversal of 1648401 is 1048461.

It is not a de Polignac number, because 1648401 - 2¹⁰ = 1647377 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1648441) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11790 + ... + 11928.

It is an arithmetic number, because the mean of its divisors is an integer number (142800).

2^1648401 is an apocalyptic number.

It is an amenable number.

1648401 is a deficient number, since it is larger than the sum of its proper divisors (636399).

1648401 is a wasteful number, since it uses less digits than its factorization.

1648401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 268.

The product of its (nonzero) digits is 768, while the sum is 24.

The square root of 1648401 is about 1283.9006970946. The cubic root of 1648401 is about 118.1283913250.

The spelling of 1648401 in words is "one million, six hundred forty-eight thousand, four hundred one".