7172220667 has 8 divisors (see below), whose sum is σ = 7405703552. Its totient is φ = 6938870400.

The previous prime is 7172220619. The next prime is 7172220673. The reversal of 7172220667 is 7660222717.

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 7172220667 - 2¹¹ = 7172218619 is a prime.

It is a super-2 number, since 2×7172220667² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7172220067) 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, 83317 + ... + 145897.

It is an arithmetic number, because the mean of its divisors is an integer number (925712944).

Almost surely, 2^7172220667 is an apocalyptic number.

7172220667 is a deficient number, since it is larger than the sum of its proper divisors (233482885).

7172220667 is a wasteful number, since it uses less digits than its factorization.

7172220667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66309.

The product of its (nonzero) digits is 98784, while the sum is 40.

The square root of 7172220667 is about 84688.9642574521. The cubic root of 7172220667 is about 1928.4921748818.

The spelling of 7172220667 in words is "seven billion, one hundred seventy-two million, two hundred twenty thousand, six hundred sixty-seven".