620803 has 4 divisors (see below), whose sum is σ = 642240. Its totient is φ = 599368.

The previous prime is 620777. The next prime is 620813. The reversal of 620803 is 308026.

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 620803 - 2⁵ = 620771 is a prime.

It is a Duffinian number.

620803 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (620813) 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, 10675 + ... + 10732.

It is an arithmetic number, because the mean of its divisors is an integer number (160560).

2⁶²⁰⁸⁰³ is an apocalyptic number.

620803 is a deficient number, since it is larger than the sum of its proper divisors (21437).

620803 is a wasteful number, since it uses less digits than its factorization.

620803 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21436.

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

The square root of 620803 is about 787.9105279154. The cubic root of 620803 is about 85.3069868344.

Adding to 620803 its reverse (308026), we get a palindrome (928829).

The spelling of 620803 in words is "six hundred twenty thousand, eight hundred three".