1648901 has 4 divisors (see below), whose sum is σ = 1684032. Its totient is φ = 1613772.

The previous prime is 1648879. The next prime is 1648909. The reversal of 1648901 is 1098461.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1648901 - 2⁶ = 1648837 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1648909) 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, 17495 + ... + 17588.

It is an arithmetic number, because the mean of its divisors is an integer number (421008).

2^1648901 is an apocalyptic number.

It is an amenable number.

1648901 is a deficient number, since it is larger than the sum of its proper divisors (35131).

1648901 is an equidigital number, since it uses as much as digits as its factorization.

1648901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35130.

The product of its (nonzero) digits is 1728, while the sum is 29.

The square root of 1648901 is about 1284.0954014403. The cubic root of 1648901 is about 118.1403338529.

The spelling of 1648901 in words is "one million, six hundred forty-eight thousand, nine hundred one".