1623841 has 4 divisors (see below), whose sum is σ = 1646784. Its totient is φ = 1600900.

The previous prime is 1623833. The next prime is 1623847. The reversal of 1623841 is 1483261.

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 1623841 - 2³ = 1623833 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1623847) 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, 11365 + ... + 11506.

It is an arithmetic number, because the mean of its divisors is an integer number (411696).

2^1623841 is an apocalyptic number.

It is an amenable number.

1623841 is a deficient number, since it is larger than the sum of its proper divisors (22943).

1623841 is an equidigital number, since it uses as much as digits as its factorization.

1623841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22942.

The product of its digits is 1152, while the sum is 25.

The square root of 1623841 is about 1274.3002001098. The cubic root of 1623841 is about 117.5387770008.

The spelling of 1623841 in words is "one million, six hundred twenty-three thousand, eight hundred forty-one".