1623241 has 4 divisors (see below), whose sum is σ = 1628032. Its totient is φ = 1618452.

The previous prime is 1623233. The next prime is 1623263. The reversal of 1623241 is 1423261.

1623241 is nontrivially palindromic in base 4.

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, and also an emirpimes, since its reverse is a distinct semiprime: 1423261 = 7 ⋅203323.

It is a cyclic number.

It is not a de Polignac number, because 1623241 - 2³ = 1623233 is a prime.

It is a super-2 number, since 2×1623241² = 5269822688162, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1621241) 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, 1845 + ... + 2578.

It is an arithmetic number, because the mean of its divisors is an integer number (407008).

2^1623241 is an apocalyptic number.

It is an amenable number.

1623241 is a deficient number, since it is larger than the sum of its proper divisors (4791).

1623241 is an equidigital number, since it uses as much as digits as its factorization.

1623241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4790.

The product of its digits is 288, while the sum is 19.

The square root of 1623241 is about 1274.0647550262. The cubic root of 1623241 is about 117.5242985813.

It can be divided in two parts, 162 and 3241, that added together give a triangular number (3403 = T₈₂).

The spelling of 1623241 in words is "one million, six hundred twenty-three thousand, two hundred forty-one".