7222547906 has 16 divisors (see below), whose sum is σ = 12919837824. Its totient is φ = 2960795904.

The previous prime is 7222547897. The next prime is 7222547909. The reversal of 7222547906 is 6097452227.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (7222547909) 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, 11214815 + ... + 11215458.

It is an arithmetic number, because the mean of its divisors is an integer number (807489864).

Almost surely, 2^7222547906 is an apocalyptic number.

7222547906 is a deficient number, since it is larger than the sum of its proper divisors (5697289918).

7222547906 is a wasteful number, since it uses less digits than its factorization.

7222547906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22430305.

The product of its (nonzero) digits is 423360, while the sum is 44.

The square root of 7222547906 is about 84985.5746935914. The cubic root of 7222547906 is about 1932.9923875653.

The spelling of 7222547906 in words is "seven billion, two hundred twenty-two million, five hundred forty-seven thousand, nine hundred six".