7216705667 has 4 divisors (see below), whose sum is σ = 7449502656. Its totient is φ = 6983908680.

The previous prime is 7216705633. The next prime is 7216705669. The reversal of 7216705667 is 7665076127.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7665076127 = 17 ⋅450886831.

It is a cyclic number.

It is not a de Polignac number, because 7216705667 - 2²² = 7212511363 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7216705669) 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, 116398448 + ... + 116398509.

It is an arithmetic number, because the mean of its divisors is an integer number (1862375664).

Almost surely, 2^7216705667 is an apocalyptic number.

7216705667 is a deficient number, since it is larger than the sum of its proper divisors (232796989).

7216705667 is a wasteful number, since it uses less digits than its factorization.

7216705667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 232796988.

The product of its (nonzero) digits is 740880, while the sum is 47.

The square root of 7216705667 is about 84951.1957949975. The cubic root of 7216705667 is about 1932.4710549295.

The spelling of 7216705667 in words is "seven billion, two hundred sixteen million, seven hundred five thousand, six hundred sixty-seven".