6428327768 has 16 divisors (see below), whose sum is σ = 12054476160. Its totient is φ = 3213800800.

The previous prime is 6428327767. The next prime is 6428327771. The reversal of 6428327768 is 8677238246.

It is a happy number.

It is a super-4 number, since 4×6428327768⁴ (a number of 40 digits) contains 4444 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6428327767) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39113 + ... + 119943.

It is an arithmetic number, because the mean of its divisors is an integer number (753404760).

Almost surely, 2^6428327768 is an apocalyptic number.

It is an amenable number.

6428327768 is a deficient number, since it is larger than the sum of its proper divisors (5626148392).

6428327768 is a wasteful number, since it uses less digits than its factorization.

6428327768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90778 (or 90774 counting only the distinct ones).

The product of its digits is 5419008, while the sum is 53.

The square root of 6428327768 is about 80176.8530687006. The cubic root of 6428327768 is about 1859.3707903708.

The spelling of 6428327768 in words is "six billion, four hundred twenty-eight million, three hundred twenty-seven thousand, seven hundred sixty-eight".