6671931840 has 336 divisors, whose sum is σ = 26392436928. Its totient is φ = 1515405312.

The previous prime is 6671931803. The next prime is 6671931863. The reversal of 6671931840 is 481391766.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (336).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3486724 + ... + 3488636.

Almost surely, 2^6671931840 is an apocalyptic number.

6671931840 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 6671931840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13196218464).

6671931840 is an abundant number, since it is smaller than the sum of its proper divisors (19720505088).

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

6671931840 is a wasteful number, since it uses less digits than its factorization.

6671931840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2116 (or 2103 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 45.

The square root of 6671931840 is about 81681.8941993879. The cubic root of 6671931840 is about 1882.5673991625.

The spelling of 6671931840 in words is "six billion, six hundred seventy-one million, nine hundred thirty-one thousand, eight hundred forty".