6390715968 has 1120 divisors, whose sum is σ = 26436157440. Its totient is φ = 1478062080.

The previous prime is 6390715957. The next prime is 6390715979. The reversal of 6390715968 is 8695170936.

It is an interprime number because it is at equal distance from previous prime (6390715957) and next prime (6390715979).

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 206152113 + ... + 206152143.

It is an arithmetic number, because the mean of its divisors is an integer number (23603712).

Almost surely, 2^6390715968 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 6390715968, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13218078720).

6390715968 is an abundant number, since it is smaller than the sum of its proper divisors (20045441472).

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

6390715968 is a wasteful number, since it uses less digits than its factorization.

6390715968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117 (or 98 counting only the distinct ones).

The product of its (nonzero) digits is 2449440, while the sum is 54.

The square root of 6390715968 is about 79941.9537414492. The cubic root of 6390715968 is about 1855.7373352526.

The spelling of 6390715968 in words is "six billion, three hundred ninety million, seven hundred fifteen thousand, nine hundred sixty-eight".