6721316 has 12 divisors (see below), whose sum is σ = 13442688. Its totient is φ = 2880552.

The previous prime is 6721303. The next prime is 6721331. The reversal of 6721316 is 6131276.

6721316 is an admirable number.

It is a hoax number, since the sum of its digits (26) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

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, 119996 + ... + 120051.

It is an arithmetic number, because the mean of its divisors is an integer number (1120224).

Almost surely, 2^6721316 is an apocalyptic number.

It is an amenable number.

6721316 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6721316 is a wasteful number, since it uses less digits than its factorization.

6721316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240058 (or 240056 counting only the distinct ones).

The product of its digits is 1512, while the sum is 26.

The square root of 6721316 is about 2592.5500959480. The cubic root of 6721316 is about 188.7200768318.

The spelling of 6721316 in words is "six million, seven hundred twenty-one thousand, three hundred sixteen".