6922222561 has 4 divisors (see below), whose sum is σ = 6985729300. Its totient is φ = 6858715824.

The previous prime is 6922222547. The next prime is 6922222597. The reversal of 6922222561 is 1652222296.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3621030625 + 3301191936 = 60175^2 + 57456^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6922222561 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6922222561.

It is not an unprimeable number, because it can be changed into a prime (6922222511) 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, 31753206 + ... + 31753423.

It is an arithmetic number, because the mean of its divisors is an integer number (1746432325).

Almost surely, 2^6922222561 is an apocalyptic number.

It is an amenable number.

6922222561 is a deficient number, since it is larger than the sum of its proper divisors (63506739).

6922222561 is a wasteful number, since it uses less digits than its factorization.

6922222561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63506738.

The product of its digits is 51840, while the sum is 37.

The square root of 6922222561 is about 83199.8951982513. The cubic root of 6922222561 is about 1905.8198798859.

The spelling of 6922222561 in words is "six billion, nine hundred twenty-two million, two hundred twenty-two thousand, five hundred sixty-one".