665000620 has 12 divisors (see below), whose sum is σ = 1396501344. Its totient is φ = 266000240.

The previous prime is 665000617. The next prime is 665000639. The reversal of 665000620 is 26000566.

665000620 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16624996 + ... + 16625035.

It is an arithmetic number, because the mean of its divisors is an integer number (116375112).

Almost surely, 2^665000620 is an apocalyptic number.

It is an amenable number.

665000620 is an abundant number, since it is smaller than the sum of its proper divisors (731500724).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

665000620 is a wasteful number, since it uses less digits than its factorization.

665000620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33250040 (or 33250038 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 665000620 is about 25787.6059377368. The cubic root of 665000620 is about 872.8521447808.

The spelling of 665000620 in words is "six hundred sixty-five million, six hundred twenty", and thus it is an aban number.