620046642644 has 24 divisors (see below), whose sum is σ = 1274781210528. Its totient is φ = 260159430240.

The previous prime is 620046642643. The next prime is 620046642671. The reversal of 620046642644 is 446246640026.

620046642644 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a junction number, because it is equal to n+sod(n) for n = 620046642595 and 620046642604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (620046642643) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 541998242 + ... + 541999385.

It is an arithmetic number, because the mean of its divisors is an integer number (53115883772).

Almost surely, 2^620046642644 is an apocalyptic number.

It is an amenable number.

620046642644 is an abundant number, since it is smaller than the sum of its proper divisors (654734567884).

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

620046642644 is a wasteful number, since it uses less digits than its factorization.

620046642644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1083997655 (or 1083997653 counting only the distinct ones).

The product of its (nonzero) digits is 1327104, while the sum is 44.

The spelling of 620046642644 in words is "six hundred twenty billion, forty-six million, six hundred forty-two thousand, six hundred forty-four".