637213422 has 8 divisors (see below), whose sum is σ = 1274426856. Its totient is φ = 212404472.

The previous prime is 637213351. The next prime is 637213453. The reversal of 637213422 is 224312736.

It is a sphenic number, since it is the product of 3 distinct primes.

637213422 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 637213422.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53101113 + ... + 53101124.

It is an arithmetic number, because the mean of its divisors is an integer number (159303357).

Almost surely, 2^637213422 is an apocalyptic number.

637213422 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

637213422 is a wasteful number, since it uses less digits than its factorization.

637213422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106202242.

The product of its digits is 12096, while the sum is 30.

The square root of 637213422 is about 25243.0866179237. The cubic root of 637213422 is about 860.5213271411.

The spelling of 637213422 in words is "six hundred thirty-seven million, two hundred thirteen thousand, four hundred twenty-two".