620420216406 has 16 divisors (see below), whose sum is σ = 1245256238448. Its totient is φ = 206070771200.

The previous prime is 620420216387. The next prime is 620420216411. The reversal of 620420216406 is 604612024026.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 183990075 + ... + 183993446.

It is an arithmetic number, because the mean of its divisors is an integer number (77828514903).

Almost surely, 2^620420216406 is an apocalyptic number.

620420216406 is an abundant number, since it is smaller than the sum of its proper divisors (624836022042).

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

620420216406 is a wasteful number, since it uses less digits than its factorization.

620420216406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 367983807.

The product of its (nonzero) digits is 27648, while the sum is 33.

The spelling of 620420216406 in words is "six hundred twenty billion, four hundred twenty million, two hundred sixteen thousand, four hundred six".