620647212234 has 128 divisors (see below), whose sum is σ = 1470625873920. Its totient is φ = 170877988800.

The previous prime is 620647212191. The next prime is 620647212247. The reversal of 620647212234 is 432212746026.

It is a junction number, because it is equal to n+sod(n) for n = 620647212192 and 620647212201.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 405386049 + ... + 405387579.

It is an arithmetic number, because the mean of its divisors is an integer number (11489264640).

Almost surely, 2^620647212234 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 620647212234, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (735312936960).

620647212234 is an abundant number, since it is smaller than the sum of its proper divisors (849978661686).

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

620647212234 is a wasteful number, since it uses less digits than its factorization.

620647212234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2696.

The product of its (nonzero) digits is 193536, while the sum is 39.

The spelling of 620647212234 in words is "six hundred twenty billion, six hundred forty-seven million, two hundred twelve thousand, two hundred thirty-four".