620559965 has 8 divisors (see below), whose sum is σ = 744872928. Its totient is φ = 496314000.

The previous prime is 620559949. The next prime is 620559977. The reversal of 620559965 is 569955026.

It is a happy number.

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

It is not a de Polignac number, because 620559965 - 2⁴ = 620559949 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6590 + ... + 35840.

It is an arithmetic number, because the mean of its divisors is an integer number (93109116).

Almost surely, 2^620559965 is an apocalyptic number.

It is an amenable number.

620559965 is a deficient number, since it is larger than the sum of its proper divisors (124312963).

620559965 is a wasteful number, since it uses less digits than its factorization.

620559965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33499.

The product of its (nonzero) digits is 729000, while the sum is 47.

The square root of 620559965 is about 24911.0410260190. The cubic root of 620559965 is about 852.9585324901.

The spelling of 620559965 in words is "six hundred twenty million, five hundred fifty-nine thousand, nine hundred sixty-five".