1648001 has 2 divisors, whose sum is σ = 1648002. Its totient is φ = 1648000.

The previous prime is 1647977. The next prime is 1648021. The reversal of 1648001 is 1008461.

It is an a-pointer prime, because the next prime (1648021) can be obtained adding 1648001 to its sum of digits (20).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1100401 + 547600 = 1049^2 + 740^2 .

It is a cyclic number.

It is not a de Polignac number, because 1648001 - 2⁶ = 1647937 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (1648021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 824000 + 824001.

It is an arithmetic number, because the mean of its divisors is an integer number (824001).

2^1648001 is an apocalyptic number.

It is an amenable number.

1648001 is a deficient number, since it is larger than the sum of its proper divisors (1).

1648001 is an equidigital number, since it uses as much as digits as its factorization.

1648001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 192, while the sum is 20.

The square root of 1648001 is about 1283.7449123560. The cubic root of 1648001 is about 118.1188355638.

The spelling of 1648001 in words is "one million, six hundred forty-eight thousand, one".