6621127249 has 8 divisors (see below), whose sum is σ = 7234288992. Its totient is φ = 6009839040.

The previous prime is 6621127217. The next prime is 6621127259. The reversal of 6621127249 is 9427211266.

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

It is a cyclic number.

It is not a de Polignac number, because 6621127249 - 2⁵ = 6621127217 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6621127259) 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, 460984 + ... + 475129.

It is an arithmetic number, because the mean of its divisors is an integer number (904286124).

Almost surely, 2^6621127249 is an apocalyptic number.

It is an amenable number.

6621127249 is a deficient number, since it is larger than the sum of its proper divisors (613161743).

6621127249 is a wasteful number, since it uses less digits than its factorization.

6621127249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 936767.

The product of its digits is 72576, while the sum is 40.

The square root of 6621127249 is about 81370.3093824768. The cubic root of 6621127249 is about 1877.7768395024.

The spelling of 6621127249 in words is "six billion, six hundred twenty-one million, one hundred twenty-seven thousand, two hundred forty-nine".