6620799 has 16 divisors (see below), whose sum is σ = 9041760. Its totient is φ = 4308480.

The previous prime is 6620791. The next prime is 6620807. The reversal of 6620799 is 9970266.

It is an interprime number because it is at equal distance from previous prime (6620791) and next prime (6620807).

It is not a de Polignac number, because 6620799 - 2³ = 6620791 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6620791) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36489 + ... + 36669.

It is an arithmetic number, because the mean of its divisors is an integer number (565110).

Almost surely, 2^6620799 is an apocalyptic number.

6620799 is a deficient number, since it is larger than the sum of its proper divisors (2420961).

6620799 is a wasteful number, since it uses less digits than its factorization.

6620799 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 410.

The product of its (nonzero) digits is 40824, while the sum is 39.

The square root of 6620799 is about 2573.0913314533. The cubic root of 6620799 is about 187.7745808102.

The spelling of 6620799 in words is "six million, six hundred twenty thousand, seven hundred ninety-nine".