620888017 has 4 divisors (see below), whose sum is σ = 626916160. Its totient is φ = 614859876.

The previous prime is 620888003. The next prime is 620888063. The reversal of 620888017 is 710888026.

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 a de Polignac number, because none of the positive numbers 2^k-620888017 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (620888417) 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, 3013917 + ... + 3014122.

It is an arithmetic number, because the mean of its divisors is an integer number (156729040).

Almost surely, 2^620888017 is an apocalyptic number.

It is an amenable number.

620888017 is a deficient number, since it is larger than the sum of its proper divisors (6028143).

620888017 is a wasteful number, since it uses less digits than its factorization.

620888017 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6028142.

The product of its (nonzero) digits is 43008, while the sum is 40.

The square root of 620888017 is about 24917.6246259550. The cubic root of 620888017 is about 853.1088083032.

Subtracting 620888017 from its reverse (710888026), we obtain a palindrome (90000009).

The spelling of 620888017 in words is "six hundred twenty million, eight hundred eighty-eight thousand, seventeen".