620808065 has 8 divisors (see below), whose sum is σ = 777359808. Its totient is φ = 475053040.

The previous prime is 620808061. The next prime is 620808073. The reversal of 620808065 is 560808026.

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

It is not a de Polignac number, because 620808065 - 2² = 620808061 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (620808061) 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, 2699051 + ... + 2699280.

It is an arithmetic number, because the mean of its divisors is an integer number (97169976).

Almost surely, 2^620808065 is an apocalyptic number.

It is an amenable number.

620808065 is a deficient number, since it is larger than the sum of its proper divisors (156551743).

620808065 is a wasteful number, since it uses less digits than its factorization.

620808065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5398359.

The product of its (nonzero) digits is 23040, while the sum is 35.

The square root of 620808065 is about 24916.0202480252. The cubic root of 620808065 is about 853.0721883430.

The spelling of 620808065 in words is "six hundred twenty million, eight hundred eight thousand, sixty-five".