620093857 has 4 divisors (see below), whose sum is σ = 622825776. Its totient is φ = 617361940.

The previous prime is 620093849. The next prime is 620093867. The reversal of 620093857 is 758390026.

620093857 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, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 620093857 - 2³ = 620093849 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (620093807) 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, 1365619 + ... + 1366072.

It is an arithmetic number, because the mean of its divisors is an integer number (155706444).

Almost surely, 2^620093857 is an apocalyptic number.

It is an amenable number.

620093857 is a deficient number, since it is larger than the sum of its proper divisors (2731919).

620093857 is a wasteful number, since it uses less digits than its factorization.

620093857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2731918.

The product of its (nonzero) digits is 90720, while the sum is 40.

The square root of 620093857 is about 24901.6838185694. The cubic root of 620093857 is about 852.7449241367.

The spelling of 620093857 in words is "six hundred twenty million, ninety-three thousand, eight hundred fifty-seven".