6620203 has 4 divisors (see below), whose sum is σ = 6719080. Its totient is φ = 6521328.

The previous prime is 6620183. The next prime is 6620209. The reversal of 6620203 is 3020266.

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

It is a cyclic number.

It is not a de Polignac number, because 6620203 - 2⁵ = 6620171 is a prime.

It is a super-2 number, since 2×6620203² = 87654175522418, which contains 22 as substring.

It is a Duffinian number.

6620203 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (6620209) 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, 49338 + ... + 49471.

It is an arithmetic number, because the mean of its divisors is an integer number (1679770).

Almost surely, 2^6620203 is an apocalyptic number.

6620203 is a deficient number, since it is larger than the sum of its proper divisors (98877).

6620203 is an equidigital number, since it uses as much as digits as its factorization.

6620203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98876.

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

The square root of 6620203 is about 2572.9755148466. The cubic root of 6620203 is about 187.7689461927.

Adding to 6620203 its reverse (3020266), we get a palindrome (9640469).

The spelling of 6620203 in words is "six million, six hundred twenty thousand, two hundred three".