6720164 has 24 divisors (see below), whose sum is σ = 12921888. Its totient is φ = 3032640.

The previous prime is 6720157. The next prime is 6720173. The reversal of 6720164 is 4610276.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6704 + ... + 7640.

It is an arithmetic number, because the mean of its divisors is an integer number (538412).

Almost surely, 2^6720164 is an apocalyptic number.

It is an amenable number.

6720164 is a deficient number, since it is larger than the sum of its proper divisors (6201724).

6720164 is a wasteful number, since it uses less digits than its factorization.

6720164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1115 (or 1113 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 26.

The square root of 6720164 is about 2592.3279113569. The cubic root of 6720164 is about 188.7092943228.

The spelling of 6720164 in words is "six million, seven hundred twenty thousand, one hundred sixty-four".