620030491865 has 4 divisors (see below), whose sum is σ = 744036590244. Its totient is φ = 496024393488.

The previous prime is 620030491853. The next prime is 620030491921. The reversal of 620030491865 is 568194030026.

620030491865 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 475973048464 + 144057443401 = 689908^2 + 379549^2 .

It is a cyclic number.

It is not a de Polignac number, because 620030491865 - 2⁴ = 620030491849 is a prime.

It is a Duffinian number.

It is a Curzon number.

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, 62003049182 + ... + 62003049191.

It is an arithmetic number, because the mean of its divisors is an integer number (186009147561).

Almost surely, 2^620030491865 is an apocalyptic number.

It is an amenable number.

620030491865 is a deficient number, since it is larger than the sum of its proper divisors (124006098379).

620030491865 is a wasteful number, since it uses less digits than its factorization.

620030491865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124006098378.

The product of its (nonzero) digits is 311040, while the sum is 44.

The spelling of 620030491865 in words is "six hundred twenty billion, thirty million, four hundred ninety-one thousand, eight hundred sixty-five".