7057200721 has 8 divisors (see below), whose sum is σ = 7470334080. Its totient is φ = 6655386192.

The previous prime is 7057200719. The next prime is 7057200767. The reversal of 7057200721 is 1270027507.

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 7057200721 - 2¹ = 7057200719 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7057200781) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2828425 + ... + 2830918.

It is an arithmetic number, because the mean of its divisors is an integer number (933791760).

Almost surely, 2^7057200721 is an apocalyptic number.

It is an amenable number.

7057200721 is a deficient number, since it is larger than the sum of its proper divisors (413133359).

7057200721 is a wasteful number, since it uses less digits than its factorization.

7057200721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5659415.

The product of its (nonzero) digits is 6860, while the sum is 31.

The square root of 7057200721 is about 84007.1468447774. The cubic root of 7057200721 is about 1918.1275800470.

The spelling of 7057200721 in words is "seven billion, fifty-seven million, two hundred thousand, seven hundred twenty-one".