620713 has 4 divisors (see below), whose sum is σ = 640768. Its totient is φ = 600660.

The previous prime is 620693. The next prime is 620717. The reversal of 620713 is 317026.

620713 is nontrivially palindromic in base 9.

620713 is digitally balanced in base 2, 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 620713 - 2⁹ = 620201 is a prime.

It is a Duffinian number.

620713 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (620717) 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, 9981 + ... + 10042.

It is an arithmetic number, because the mean of its divisors is an integer number (160192).

2⁶²⁰⁷¹³ is an apocalyptic number.

It is an amenable number.

620713 is a deficient number, since it is larger than the sum of its proper divisors (20055).

620713 is a wasteful number, since it uses less digits than its factorization.

620713 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20054.

The product of its (nonzero) digits is 252, while the sum is 19.

The square root of 620713 is about 787.8534127615. The cubic root of 620713 is about 85.3028642169.

Adding to 620713 its reverse (317026), we get a palindrome (937739).

The spelling of 620713 in words is "six hundred twenty thousand, seven hundred thirteen".