4620420644 has 48 divisors (see below), whose sum is σ = 9465071616. Its totient is φ = 1932528000.

The previous prime is 4620420631. The next prime is 4620420653. The reversal of 4620420644 is 4460240264.

It is a self number, because there is not a number n which added to its sum of digits gives 4620420644.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 275294 + ... + 291594.

It is an arithmetic number, because the mean of its divisors is an integer number (197188992).

Almost surely, 2^4620420644 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4620420644, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4732535808).

4620420644 is an abundant number, since it is smaller than the sum of its proper divisors (4844650972).

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

4620420644 is a wasteful number, since it uses less digits than its factorization.

4620420644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16556 (or 16554 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 32.

The square root of 4620420644 is about 67973.6761106827. The cubic root of 4620420644 is about 1665.5608548615.

The spelling of 4620420644 in words is "four billion, six hundred twenty million, four hundred twenty thousand, six hundred forty-four".