6720771 has 16 divisors (see below), whose sum is σ = 9351936. Its totient is φ = 4289376.

The previous prime is 6720751. The next prime is 6720773. The reversal of 6720771 is 1770276.

It is a happy number.

It is not a de Polignac number, because 6720771 - 2⁵ = 6720739 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6720773) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6346 + ... + 7328.

It is an arithmetic number, because the mean of its divisors is an integer number (584496).

Almost surely, 2^6720771 is an apocalyptic number.

6720771 is a deficient number, since it is larger than the sum of its proper divisors (2631165).

6720771 is a wasteful number, since it uses less digits than its factorization.

6720771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1082.

The product of its (nonzero) digits is 4116, while the sum is 30.

The square root of 6720771 is about 2592.4449849515. Note that the first 3 decimals coincide. The cubic root of 6720771 is about 188.7149758852.

The spelling of 6720771 in words is "six million, seven hundred twenty thousand, seven hundred seventy-one".