667224222 has 96 divisors (see below), whose sum is σ = 1607611392. Its totient is φ = 180792000.

The previous prime is 667224179. The next prime is 667224241. The reversal of 667224222 is 222422766.

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2461947 + ... + 2462217.

It is an arithmetic number, because the mean of its divisors is an integer number (16745952).

Almost surely, 2^667224222 is an apocalyptic number.

667224222 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 667224222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (803805696).

667224222 is an abundant number, since it is smaller than the sum of its proper divisors (940387170).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

667224222 is a wasteful number, since it uses less digits than its factorization.

667224222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 406 (or 375 counting only the distinct ones).

The product of its digits is 32256, while the sum is 33.

The square root of 667224222 is about 25830.6837307881. The cubic root of 667224222 is about 873.8239315994.

Adding to 667224222 its reverse (222422766), we get a palindrome (889646988).

The spelling of 667224222 in words is "six hundred sixty-seven million, two hundred twenty-four thousand, two hundred twenty-two".