6913999620 has 480 divisors, whose sum is σ = 25949911680. Its totient is φ = 1521192960.

The previous prime is 6913999607. The next prime is 6913999693. The reversal of 6913999620 is 269993196.

6913999620 is a `hidden beast` number, since 6 + 9 + 1 + 3 + 9 + 9 + 9 + 620 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 8784867 + ... + 8785653.

It is an arithmetic number, because the mean of its divisors is an integer number (54062316).

Almost surely, 2^6913999620 is an apocalyptic number.

6913999620 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 6913999620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12974955840).

6913999620 is an abundant number, since it is smaller than the sum of its proper divisors (19035912060).

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

6913999620 is a wasteful number, since it uses less digits than its factorization.

6913999620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 865 (or 854 counting only the distinct ones).

The product of its (nonzero) digits is 1417176, while the sum is 54.

The square root of 6913999620 is about 83150.4637389353. The cubic root of 6913999620 is about 1905.0649367163.

The spelling of 6913999620 in words is "six billion, nine hundred thirteen million, nine hundred ninety-nine thousand, six hundred twenty".