620817337617 has 8 divisors (see below), whose sum is σ = 828216066720. Its totient is φ = 413648416800.

The previous prime is 620817337607. The next prime is 620817337717. The reversal of 620817337617 is 716733718026.

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

It is not a de Polignac number, because 620817337617 - 2¹⁴ = 620817321233 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 620817337617.

It is not an unprimeable number, because it can be changed into a prime (620817337607) 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, 57445767 + ... + 57456572.

It is an arithmetic number, because the mean of its divisors is an integer number (103527008340).

Almost surely, 2^620817337617 is an apocalyptic number.

It is an amenable number.

620817337617 is a deficient number, since it is larger than the sum of its proper divisors (207398729103).

620817337617 is a wasteful number, since it uses less digits than its factorization.

620817337617 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114904143.

The product of its (nonzero) digits is 1778112, while the sum is 51.

The spelling of 620817337617 in words is "six hundred twenty billion, eight hundred seventeen million, three hundred thirty-seven thousand, six hundred seventeen".