7075832721 has 4 divisors (see below), whose sum is σ = 9434443632. Its totient is φ = 4717221812.

The previous prime is 7075832683. The next prime is 7075832747. The reversal of 7075832721 is 1272385707.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1272385707 = 3 ⋅424128569.

It is a cyclic number.

It is not a de Polignac number, because 7075832721 - 2¹¹ = 7075830673 is a prime.

It is not an unprimeable number, because it can be changed into a prime (7075837721) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1179305451 + ... + 1179305456.

It is an arithmetic number, because the mean of its divisors is an integer number (2358610908).

Almost surely, 2^7075832721 is an apocalyptic number.

It is an amenable number.

7075832721 is a deficient number, since it is larger than the sum of its proper divisors (2358610911).

7075832721 is a wasteful number, since it uses less digits than its factorization.

7075832721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2358610910.

The product of its (nonzero) digits is 164640, while the sum is 42.

The square root of 7075832721 is about 84117.9690732010. The cubic root of 7075832721 is about 1919.8141386385.

The spelling of 7075832721 in words is "seven billion, seventy-five million, eight hundred thirty-two thousand, seven hundred twenty-one".