620876317 has 8 divisors (see below), whose sum is σ = 643511000. Its totient is φ = 598549824.

The previous prime is 620876297. The next prime is 620876323. The reversal of 620876317 is 713678026.

It can be written as a sum of positive squares in 4 ways, for example, as 442092676 + 178783641 = 21026^2 + 13371^2 .

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 620876317 - 2¹¹ = 620874269 is a prime.

It is a super-2 number, since 2×620876317² = 770974802022968978, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 620876317.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (620876017) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 72942 + ... + 81007.

It is an arithmetic number, because the mean of its divisors is an integer number (80438875).

Almost surely, 2^620876317 is an apocalyptic number.

It is an amenable number.

620876317 is a deficient number, since it is larger than the sum of its proper divisors (22634683).

620876317 is a wasteful number, since it uses less digits than its factorization.

620876317 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154095.

The product of its (nonzero) digits is 84672, while the sum is 40.

The square root of 620876317 is about 24917.3898512665. The cubic root of 620876317 is about 853.1034496151.

The spelling of 620876317 in words is "six hundred twenty million, eight hundred seventy-six thousand, three hundred seventeen".