637422 has 32 divisors (see below), whose sum is σ = 1382400. Its totient is φ = 195360.

The previous prime is 637421. The next prime is 637423. The reversal of 637422 is 224736.

It is an interprime number because it is at equal distance from previous prime (637421) and next prime (637423).

It is a junction number, because it is equal to n+sod(n) for n = 637392 and 637401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (637421) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 4204 + ... + 4352.

It is an arithmetic number, because the mean of its divisors is an integer number (43200).

2⁶³⁷⁴²² is an apocalyptic number.

637422 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

637422 is an abundant number, since it is smaller than the sum of its proper divisors (744978).

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

637422 is a wasteful number, since it uses less digits than its factorization.

637422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 208.

The product of its digits is 2016, while the sum is 24.

The square root of 637422 is about 798.3871241447. The cubic root of 637422 is about 86.0615207899.

Subtracting from 637422 its reverse (224736), we obtain a triangular number (412686 = T₉₀₈).

The spelling of 637422 in words is "six hundred thirty-seven thousand, four hundred twenty-two".