620871 has 8 divisors (see below), whose sum is σ = 831600. Its totient is φ = 412032.

The previous prime is 620869. The next prime is 620887. The reversal of 620871 is 178026.

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

It is not a de Polignac number, because 620871 - 2¹ = 620869 is a prime.

620871 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 (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 7 ways as a sum of consecutive naturals, for example, 751 + ... + 1343.

It is an arithmetic number, because the mean of its divisors is an integer number (103950).

2⁶²⁰⁸⁷¹ is an apocalyptic number.

620871 is a deficient number, since it is larger than the sum of its proper divisors (210729).

620871 is a wasteful number, since it uses less digits than its factorization.

620871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 945.

The product of its (nonzero) digits is 672, while the sum is 24.

The square root of 620871 is about 787.9536788416. The cubic root of 620871 is about 85.3101014367.

Adding to 620871 its reverse (178026), we get a palindrome (798897).

The spelling of 620871 in words is "six hundred twenty thousand, eight hundred seventy-one".