672121622 has 16 divisors (see below), whose sum is σ = 1083423600. Its totient is φ = 311570688.

The previous prime is 672121609. The next prime is 672121643. The reversal of 672121622 is 226121276.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 145247 + ... + 149802.

It is an arithmetic number, because the mean of its divisors is an integer number (67713975).

Almost surely, 2^672121622 is an apocalyptic number.

672121622 is a deficient number, since it is larger than the sum of its proper divisors (411301978).

672121622 is a wasteful number, since it uses less digits than its factorization.

672121622 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 295135.

The product of its digits is 4032, while the sum is 29.

The square root of 672121622 is about 25925.3085227544. The cubic root of 672121622 is about 875.9566666429.

Adding to 672121622 its reverse (226121276), we get a palindrome (898242898).

The spelling of 672121622 in words is "six hundred seventy-two million, one hundred twenty-one thousand, six hundred twenty-two".