6620311552 has 52 divisors (see below), whose sum is σ = 13271189256. Its totient is φ = 3302113280.

The previous prime is 6620311463. The next prime is 6620311561. The reversal of 6620311552 is 2551130266.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1911102 + ... + 1914562.

It is an arithmetic number, because the mean of its divisors is an integer number (255215178).

Almost surely, 2^6620311552 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 6620311552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6635594628).

6620311552 is an abundant number, since it is smaller than the sum of its proper divisors (6650877704).

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

6620311552 is an equidigital number, since it uses as much as digits as its factorization.

6620311552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3952 (or 3930 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 31.

The square root of 6620311552 is about 81365.2969760450. The cubic root of 6620311552 is about 1877.6997247463.

The spelling of 6620311552 in words is "six billion, six hundred twenty million, three hundred eleven thousand, five hundred fifty-two".