620420000064 has 28 divisors (see below), whose sum is σ = 1641527917344. Its totient is φ = 206806666624.

The previous prime is 620420000063. The next prime is 620420000069. The reversal of 620420000064 is 460000024026.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a junction number, because it is equal to n+sod(n) for n = 620419999989 and 620420000043.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (620420000063) 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, 1615676892 + ... + 1615677275.

It is an arithmetic number, because the mean of its divisors is an integer number (58625997048).

Almost surely, 2^620420000064 is an apocalyptic number.

620420000064 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

620420000064 is an abundant number, since it is smaller than the sum of its proper divisors (1021107917280).

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

620420000064 is a wasteful number, since it uses less digits than its factorization.

620420000064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3231354182 (or 3231354172 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

The spelling of 620420000064 in words is "six hundred twenty billion, four hundred twenty million, sixty-four", and thus it is an aban number.