620853 has 4 divisors (see below), whose sum is σ = 827808. Its totient is φ = 413900.

The previous prime is 620849. The next prime is 620869. The reversal of 620853 is 358026.

620853 is digitally balanced in base 7, because in such base it contains all the possibile digits an equal number of times.

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 620853 - 2² = 620849 is a prime.

It is an Ulam number.

It is a D-number.

620853 is strictly pandigital in base 7.

620853 is a lucky number.

It is a plaindrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (620813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 103473 + ... + 103478.

It is an arithmetic number, because the mean of its divisors is an integer number (206952).

2⁶²⁰⁸⁵³ is an apocalyptic number.

It is an amenable number.

620853 is a deficient number, since it is larger than the sum of its proper divisors (206955).

620853 is a wasteful number, since it uses less digits than its factorization.

620853 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206954.

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 620853 is about 787.9422567676. The cubic root of 620853 is about 85.3092770053.

Adding to 620853 its reverse (358026), we get a palindrome (978879).

The spelling of 620853 in words is "six hundred twenty thousand, eight hundred fifty-three".