6720577 has 8 divisors (see below), whose sum is σ = 7163136. Its totient is φ = 6290592.

The previous prime is 6720533. The next prime is 6720589. The reversal of 6720577 is 7750276.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 6720577 - 2¹⁵ = 6687809 is a prime.

It is a Duffinian number.

6720577 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (6720517) 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, 2028 + ... + 4189.

It is an arithmetic number, because the mean of its divisors is an integer number (895392).

Almost surely, 2^6720577 is an apocalyptic number.

It is an amenable number.

6720577 is a deficient number, since it is larger than the sum of its proper divisors (442559).

6720577 is a wasteful number, since it uses less digits than its factorization.

6720577 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6287.

The product of its (nonzero) digits is 20580, while the sum is 34.

The square root of 6720577 is about 2592.4075682655. The cubic root of 6720577 is about 188.7131600689.

The spelling of 6720577 in words is "six million, seven hundred twenty thousand, five hundred seventy-seven".