6622403 has 4 divisors (see below), whose sum is σ = 6747408. Its totient is φ = 6497400.

The previous prime is 6622391. The next prime is 6622423. The reversal of 6622403 is 3042266.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3042266 = 2 ⋅1521133.

It is a cyclic number.

It is not a de Polignac number, because 6622403 - 2⁶ = 6622339 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6622423) 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, 62423 + ... + 62528.

It is an arithmetic number, because the mean of its divisors is an integer number (1686852).

Almost surely, 2^6622403 is an apocalyptic number.

6622403 is a deficient number, since it is larger than the sum of its proper divisors (125005).

6622403 is a wasteful number, since it uses less digits than its factorization.

6622403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125004.

The product of its (nonzero) digits is 1728, while the sum is 23.

The square root of 6622403 is about 2573.4029999205. The cubic root of 6622403 is about 187.7897434367.

Adding to 6622403 its reverse (3042266), we get a palindrome (9664669).

The spelling of 6622403 in words is "six million, six hundred twenty-two thousand, four hundred three".