6720337 has 4 divisors (see below), whose sum is σ = 7237300. Its totient is φ = 6203376.

The previous prime is 6720331. The next prime is 6720353. The reversal of 6720337 is 7330276.

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

It can be written as a sum of positive squares in 2 ways, for example, as 844561 + 5875776 = 919^2 + 2424^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6720337 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6720331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 258462 + ... + 258487.

It is an arithmetic number, because the mean of its divisors is an integer number (1809325).

Almost surely, 2^6720337 is an apocalyptic number.

It is an amenable number.

6720337 is a deficient number, since it is larger than the sum of its proper divisors (516963).

6720337 is a wasteful number, since it uses less digits than its factorization.

6720337 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 516962.

The product of its (nonzero) digits is 5292, while the sum is 28.

The square root of 6720337 is about 2592.3612788344. The cubic root of 6720337 is about 188.7109136498.

The spelling of 6720337 in words is "six million, seven hundred twenty thousand, three hundred thirty-seven".