6720199 has 8 divisors (see below), whose sum is σ = 7140960. Its totient is φ = 6312096.

The previous prime is 6720191. The next prime is 6720227. The reversal of 6720199 is 9910276.

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 6720199 - 2³ = 6720191 is a prime.

It is a super-2 number, since 2×6720199² = 90322149199202, which contains 22 as substring.

6720199 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6720191) 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, 2059 + ... + 4204.

It is an arithmetic number, because the mean of its divisors is an integer number (892620).

Almost surely, 2^6720199 is an apocalyptic number.

6720199 is a deficient number, since it is larger than the sum of its proper divisors (420761).

6720199 is a wasteful number, since it uses less digits than its factorization.

6720199 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6329.

The product of its (nonzero) digits is 6804, while the sum is 34.

The square root of 6720199 is about 2592.3346620373. The cubic root of 6720199 is about 188.7096219346.

The spelling of 6720199 in words is "six million, seven hundred twenty thousand, one hundred ninety-nine".