4678320064 has 28 divisors (see below), whose sum is σ = 10127501208. Its totient is φ = 2126508800.

The previous prime is 4678320043. The next prime is 4678320067. The reversal of 4678320064 is 4600238764.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 4678319999 and 4678320026.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4678320067) 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, 3321967 + ... + 3323374.

Almost surely, 2^4678320064 is an apocalyptic number.

4678320064 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

4678320064 is an abundant number, since it is smaller than the sum of its proper divisors (5449181144).

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

4678320064 is a wasteful number, since it uses less digits than its factorization.

4678320064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6645364 (or 6645354 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 40.

The square root of 4678320064 is about 68398.2460593837. The cubic root of 4678320064 is about 1672.4891542870.

The spelling of 4678320064 in words is "four billion, six hundred seventy-eight million, three hundred twenty thousand, sixty-four".