7210650721 has 8 divisors (see below), whose sum is σ = 7382088000. Its totient is φ = 7040854320.

The previous prime is 7210650703. The next prime is 7210650743. The reversal of 7210650721 is 1270560127.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 7210650721 - 2¹⁹ = 7210126433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7210650781) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 401325 + ... + 418906.

It is an arithmetic number, because the mean of its divisors is an integer number (922761000).

Almost surely, 2^7210650721 is an apocalyptic number.

It is an amenable number.

7210650721 is a deficient number, since it is larger than the sum of its proper divisors (171437279).

7210650721 is a wasteful number, since it uses less digits than its factorization.

7210650721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 820439.

The product of its (nonzero) digits is 5880, while the sum is 31.

The square root of 7210650721 is about 84915.5505252130. The cubic root of 7210650721 is about 1931.9304443701.

The spelling of 7210650721 in words is "seven billion, two hundred ten million, six hundred fifty thousand, seven hundred twenty-one".