667115222 has 4 divisors (see below), whose sum is σ = 1000672836. Its totient is φ = 333557610.

The previous prime is 667115209. The next prime is 667115231. The reversal of 667115222 is 222511766.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 166778804 + ... + 166778807.

It is an arithmetic number, because the mean of its divisors is an integer number (250168209).

Almost surely, 2^667115222 is an apocalyptic number.

667115222 is a deficient number, since it is larger than the sum of its proper divisors (333557614).

667115222 is a wasteful number, since it uses less digits than its factorization.

667115222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 333557613.

The product of its digits is 10080, while the sum is 32.

The square root of 667115222 is about 25828.5737507900. The cubic root of 667115222 is about 873.7763453995.

Adding to 667115222 its reverse (222511766), we get a palindrome (889626988).

The spelling of 667115222 in words is "six hundred sixty-seven million, one hundred fifteen thousand, two hundred twenty-two".