6448120620 has 96 divisors (see below), whose sum is σ = 18593971200. Its totient is φ = 1668885504.

The previous prime is 6448120619. The next prime is 6448120631. The reversal of 6448120620 is 260218446.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 268132 + ... + 291188.

It is an arithmetic number, because the mean of its divisors is an integer number (193687200).

Almost surely, 2^6448120620 is an apocalyptic number.

6448120620 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6448120620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9296985600).

6448120620 is an abundant number, since it is smaller than the sum of its proper divisors (12145850580).

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

6448120620 is a wasteful number, since it uses less digits than its factorization.

6448120620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23207 (or 23205 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 33.

The square root of 6448120620 is about 80300.1906597986. The cubic root of 6448120620 is about 1861.2771723121.

The spelling of 6448120620 in words is "six billion, four hundred forty-eight million, one hundred twenty thousand, six hundred twenty".