6932321664 has 64 divisors (see below), whose sum is σ = 18480739440. Its totient is φ = 2302396416.

The previous prime is 6932321657. The next prime is 6932321681. The reversal of 6932321664 is 4661232396.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73782 + ... + 138954.

Almost surely, 2^6932321664 is an apocalyptic number.

6932321664 is a gapful number since it is divisible by the number (64) 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 6932321664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9240369720).

6932321664 is an abundant number, since it is smaller than the sum of its proper divisors (11548417776).

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

6932321664 is a wasteful number, since it uses less digits than its factorization.

6932321664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65467 (or 65455 counting only the distinct ones).

The product of its digits is 279936, while the sum is 42.

The square root of 6932321664 is about 83260.5648791791. The cubic root of 6932321664 is about 1906.7462547399.

The spelling of 6932321664 in words is "six billion, nine hundred thirty-two million, three hundred twenty-one thousand, six hundred sixty-four".