6709432320 has 312 divisors, whose sum is σ = 23575336200. Its totient is φ = 1764753408.

The previous prime is 6709432319. The next prime is 6709432343. The reversal of 6709432320 is 232349076.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1015824384 + 5693607936 = 31872^2 + 75456^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16404276 + ... + 16404684.

It is an arithmetic number, because the mean of its divisors is an integer number (75561975).

Almost surely, 2^6709432320 is an apocalyptic number.

6709432320 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 6709432320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11787668100).

6709432320 is an abundant number, since it is smaller than the sum of its proper divisors (16865903880).

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

6709432320 is a wasteful number, since it uses less digits than its factorization.

6709432320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 533 (or 508 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 36.

The square root of 6709432320 is about 81911.1245192007. The cubic root of 6709432320 is about 1886.0878850485.

The spelling of 6709432320 in words is "six billion, seven hundred nine million, four hundred thirty-two thousand, three hundred twenty".