672105222 has 64 divisors (see below), whose sum is σ = 1569807360. Its totient is φ = 212883552.

The previous prime is 672105211. The next prime is 672105223. The reversal of 672105222 is 222501276.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (672105223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 82003 + ... + 89825.

It is an arithmetic number, because the mean of its divisors is an integer number (24528240).

Almost surely, 2^672105222 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 672105222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (784903680).

672105222 is an abundant number, since it is smaller than the sum of its proper divisors (897702138).

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

672105222 is a wasteful number, since it uses less digits than its factorization.

672105222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7914 (or 7908 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

The square root of 672105222 is about 25924.9922275784. The cubic root of 672105222 is about 875.9495420364.

Adding to 672105222 its reverse (222501276), we get a palindrome (894606498).

The spelling of 672105222 in words is "six hundred seventy-two million, one hundred five thousand, two hundred twenty-two".