620042001655 has 4 divisors (see below), whose sum is σ = 744050401992. Its totient is φ = 496033601320.

The previous prime is 620042001613. The next prime is 620042001703. The reversal of 620042001655 is 556100240026.

620042001655 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 is not a de Polignac number, because 620042001655 - 2⁹ = 620042001143 is a prime.

It is a Smith number, since the sum of its digits (31) 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 a congruent 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, 62004200161 + ... + 62004200170.

It is an arithmetic number, because the mean of its divisors is an integer number (186012600498).

Almost surely, 2^620042001655 is an apocalyptic number.

620042001655 is a deficient number, since it is larger than the sum of its proper divisors (124008400337).

620042001655 is a wasteful number, since it uses less digits than its factorization.

620042001655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124008400336.

The product of its (nonzero) digits is 14400, while the sum is 31.

The spelling of 620042001655 in words is "six hundred twenty billion, forty-two million, one thousand, six hundred fifty-five".