8118722 has 4 divisors (see below), whose sum is σ = 12178086. Its totient is φ = 4059360.

The previous prime is 8118709. The next prime is 8118727. The reversal of 8118722 is 2278118.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2278118 = 2 ⋅1139059.

It can be written as a sum of positive squares in only one way, i.e., 6558721 + 1560001 = 2561^2 + 1249^2 .

It is not an unprimeable number, because it can be changed into a prime (8118727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2029679 + ... + 2029682.

Almost surely, 2^8118722 is an apocalyptic number.

8118722 is a deficient number, since it is larger than the sum of its proper divisors (4059364).

8118722 is a wasteful number, since it uses less digits than its factorization.

8118722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4059363.

The product of its digits is 1792, while the sum is 29.

The square root of 8118722 is about 2849.3371158920. The cubic root of 8118722 is about 200.9844958875.

The spelling of 8118722 in words is "eight million, one hundred eighteen thousand, seven hundred twenty-two".