6680621443 has 8 divisors (see below), whose sum is σ = 6716373696. Its totient is φ = 6644908200.

The previous prime is 6680621429. The next prime is 6680621473. The reversal of 6680621443 is 3441260866.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6680621443 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6680621396 and 6680621405.

It is not an unprimeable number, because it can be changed into a prime (6680621473) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 373380 + ... + 390862.

It is an arithmetic number, because the mean of its divisors is an integer number (839546712).

Almost surely, 2^6680621443 is an apocalyptic number.

6680621443 is a deficient number, since it is larger than the sum of its proper divisors (35752253).

6680621443 is a wasteful number, since it uses less digits than its factorization.

6680621443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19505.

The product of its (nonzero) digits is 165888, while the sum is 40.

The square root of 6680621443 is about 81735.0686241836. The cubic root of 6680621443 is about 1883.3843372896.

The spelling of 6680621443 in words is "six billion, six hundred eighty million, six hundred twenty-one thousand, four hundred forty-three".