6421033 has 4 divisors (see below), whose sum is σ = 6429780. Its totient is φ = 6412288.

The previous prime is 6421021. The next prime is 6421039. The reversal of 6421033 is 3301246.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6110784 + 310249 = 2472^2 + 557^2 .

It is a cyclic number.

It is not a de Polignac number, because 6421033 - 2⁵ = 6421001 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6421033.

It is not an unprimeable number, because it can be changed into a prime (6421039) 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, 3160 + ... + 4777.

It is an arithmetic number, because the mean of its divisors is an integer number (1607445).

Almost surely, 2^6421033 is an apocalyptic number.

It is an amenable number.

6421033 is a deficient number, since it is larger than the sum of its proper divisors (8747).

6421033 is an equidigital number, since it uses as much as digits as its factorization.

6421033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8746.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 6421033 is about 2533.9757299548. The cubic root of 6421033 is about 185.8667195652.

Adding to 6421033 its reverse (3301246), we get a palindrome (9722279).

The spelling of 6421033 in words is "six million, four hundred twenty-one thousand, thirty-three".