6621880413 has 8 divisors (see below), whose sum is σ = 8868767488. Its totient is φ = 4394790144.

The previous prime is 6621880381. The next prime is 6621880427. The reversal of 6621880413 is 3140881266.

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

It is not a de Polignac number, because 6621880413 - 2⁵ = 6621880381 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6621880453) 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, 4948420 + ... + 4949757.

It is an arithmetic number, because the mean of its divisors is an integer number (1108595936).

Almost surely, 2^6621880413 is an apocalyptic number.

It is an amenable number.

6621880413 is a deficient number, since it is larger than the sum of its proper divisors (2246887075).

6621880413 is a wasteful number, since it uses less digits than its factorization.

6621880413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9898403.

The product of its (nonzero) digits is 55296, while the sum is 39.

The square root of 6621880413 is about 81374.9372534320. The cubic root of 6621880413 is about 1877.8480368600.

The spelling of 6621880413 in words is "six billion, six hundred twenty-one million, eight hundred eighty thousand, four hundred thirteen".