6420233 has 4 divisors (see below), whose sum is σ = 6758160. Its totient is φ = 6082308.

The previous prime is 6420221. The next prime is 6420259. The reversal of 6420233 is 3320246.

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 6420233 - 2¹⁰ = 6419209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6420833) 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, 168935 + ... + 168972.

It is an arithmetic number, because the mean of its divisors is an integer number (1689540).

Almost surely, 2^6420233 is an apocalyptic number.

It is an amenable number.

6420233 is a deficient number, since it is larger than the sum of its proper divisors (337927).

6420233 is a wasteful number, since it uses less digits than its factorization.

6420233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 337926.

The product of its (nonzero) digits is 864, while the sum is 20.

The square root of 6420233 is about 2533.8178703293. The cubic root of 6420233 is about 185.8590001660.

Adding to 6420233 its reverse (3320246), we get a palindrome (9740479).

The spelling of 6420233 in words is "six million, four hundred twenty thousand, two hundred thirty-three".