620885 has 8 divisors (see below), whose sum is σ = 777600. Its totient is φ = 475024.

The previous prime is 620869. The next prime is 620887. The reversal of 620885 is 588026.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 620885 - 2⁴ = 620869 is a prime.

It is a Curzon 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 (620887) 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 7 ways as a sum of consecutive naturals, for example, 2585 + ... + 2814.

It is an arithmetic number, because the mean of its divisors is an integer number (97200).

2⁶²⁰⁸⁸⁵ is an apocalyptic number.

It is an amenable number.

620885 is a deficient number, since it is larger than the sum of its proper divisors (156715).

620885 is a wasteful number, since it uses less digits than its factorization.

620885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5427.

The product of its (nonzero) digits is 3840, while the sum is 29.

The square root of 620885 is about 787.9625625625. The cubic root of 620885 is about 85.3107426501.

The spelling of 620885 in words is "six hundred twenty thousand, eight hundred eighty-five".