6949421568 has 200 divisors, whose sum is σ = 21964550652. Its totient is φ = 2179989504.

The previous prime is 6949421441. The next prime is 6949421569. The reversal of 6949421568 is 8651249496.

It can be written as a sum of positive squares in 2 ways, for example, as 6903615744 + 45805824 = 83088^2 + 6768^2 .

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

It is not an unprimeable number, because it can be changed into a prime (6949421569) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 700096 + ... + 709952.

Almost surely, 2^6949421568 is an apocalyptic number.

6949421568 is a gapful number since it is divisible by the number (68) 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 6949421568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10982275326).

6949421568 is an abundant number, since it is smaller than the sum of its proper divisors (15015129084).

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

6949421568 is an equidigital number, since it uses as much as digits as its factorization.

6949421568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9904 (or 9879 counting only the distinct ones).

The product of its digits is 3732480, while the sum is 54.

The square root of 6949421568 is about 83363.1907258833. The cubic root of 6949421568 is about 1908.3127528139.

The spelling of 6949421568 in words is "six billion, nine hundred forty-nine million, four hundred twenty-one thousand, five hundred sixty-eight".