6620244773 has 8 divisors (see below), whose sum is σ = 6837782016. Its totient is φ = 6402956400.

The previous prime is 6620244749. The next prime is 6620244779. The reversal of 6620244773 is 3774420266.

It is a happy number.

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 6620244773 - 2⁸ = 6620244517 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 6620244773.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6620244779) 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, 7361 + ... + 115302.

It is an arithmetic number, because the mean of its divisors is an integer number (854722752).

Almost surely, 2^6620244773 is an apocalyptic number.

It is an amenable number.

6620244773 is a deficient number, since it is larger than the sum of its proper divisors (217537243).

6620244773 is a wasteful number, since it uses less digits than its factorization.

6620244773 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124435.

The product of its (nonzero) digits is 338688, while the sum is 41.

The square root of 6620244773 is about 81364.8866096426. The cubic root of 6620244773 is about 1877.6934112805.

The spelling of 6620244773 in words is "six billion, six hundred twenty million, two hundred forty-four thousand, seven hundred seventy-three".