6721010 has 16 divisors (see below), whose sum is σ = 12180672. Its totient is φ = 2670000.

The previous prime is 6721009. The next prime is 6721019. The reversal of 6721010 is 101276.

It is a happy number.

It is an alternating number because its digits alternate between even and odd.

It is a self number, because there is not a number n which added to its sum of digits gives 6721010.

It is not an unprimeable number, because it can be changed into a prime (6721019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 716 + ... + 3735.

It is an arithmetic number, because the mean of its divisors is an integer number (761292).

Almost surely, 2^6721010 is an apocalyptic number.

6721010 is a deficient number, since it is larger than the sum of its proper divisors (5459662).

6721010 is a wasteful number, since it uses less digits than its factorization.

6721010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4609.

The product of its (nonzero) digits is 84, while the sum is 17.

The square root of 6721010 is about 2592.4910800232. The cubic root of 6721010 is about 188.7172128480.

Adding to 6721010 its reverse (101276), we get a palindrome (6822286).

The spelling of 6721010 in words is "six million, seven hundred twenty-one thousand, ten".