620829 has 12 divisors (see below), whose sum is σ = 978432. Its totient is φ = 376200.

The previous prime is 620827. The next prime is 620831. The reversal of 620829 is 928026.

It is an interprime number because it is at equal distance from previous prime (620827) and next prime (620831).

It is not a de Polignac number, because 620829 - 2¹ = 620827 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 (620821) 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 11 ways as a sum of consecutive naturals, for example, 3037 + ... + 3234.

It is an arithmetic number, because the mean of its divisors is an integer number (81536).

2⁶²⁰⁸²⁹ is an apocalyptic number.

It is an amenable number.

620829 is a deficient number, since it is larger than the sum of its proper divisors (357603).

620829 is a wasteful number, since it uses less digits than its factorization.

620829 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6288 (or 6285 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 620829 is about 787.9270270780. The cubic root of 620829 is about 85.3081777386.

The spelling of 620829 in words is "six hundred twenty thousand, eight hundred twenty-nine".