6221650547 has 4 divisors (see below), whose sum is σ = 7110457776. Its totient is φ = 5332843320.

The previous prime is 6221650543. The next prime is 6221650553. The reversal of 6221650547 is 7450561226.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 6221650547 - 2² = 6221650543 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6221650547.

It is not an unprimeable number, because it can be changed into a prime (6221650543) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 444403604 + ... + 444403617.

It is an arithmetic number, because the mean of its divisors is an integer number (1777614444).

Almost surely, 2^6221650547 is an apocalyptic number.

6221650547 is a deficient number, since it is larger than the sum of its proper divisors (888807229).

6221650547 is an equidigital number, since it uses as much as digits as its factorization.

6221650547 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 888807228.

The product of its (nonzero) digits is 100800, while the sum is 38.

The square root of 6221650547 is about 78877.4400383278. The cubic root of 6221650547 is about 1839.2264536506.

The spelling of 6221650547 in words is "six billion, two hundred twenty-one million, six hundred fifty thousand, five hundred forty-seven".