7196721 has 16 divisors (see below), whose sum is σ = 11082624. Its totient is φ = 4068864.

The previous prime is 7196701. The next prime is 7196731. The reversal of 7196721 is 1276917.

It is not a de Polignac number, because 7196721 - 2⁹ = 7196209 is a prime.

It is not an unprimeable number, because it can be changed into a prime (7196701) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 271 + ... + 3803.

It is an arithmetic number, because the mean of its divisors is an integer number (692664).

Almost surely, 2^7196721 is an apocalyptic number.

It is an amenable number.

7196721 is a deficient number, since it is larger than the sum of its proper divisors (3885903).

7196721 is a wasteful number, since it uses less digits than its factorization.

7196721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3640.

The product of its digits is 5292, while the sum is 33.

The square root of 7196721 is about 2682.6704978435. The cubic root of 7196721 is about 193.0685591396.

The spelling of 7196721 in words is "seven million, one hundred ninety-six thousand, seven hundred twenty-one".