637441 has 6 divisors (see below), whose sum is σ = 741570. Its totient is φ = 546336.

The previous prime is 637423. The next prime is 637447. The reversal of 637441 is 144736.

It can be written as a sum of positive squares in only one way, i.e., 461041 + 176400 = 679^2 + 420^2 .

It is not a de Polignac number, because 637441 - 2⁵ = 637409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (637447) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6456 + ... + 6553.

It is an arithmetic number, because the mean of its divisors is an integer number (123595).

2⁶³⁷⁴⁴¹ is an apocalyptic number.

It is an amenable number.

637441 is a deficient number, since it is larger than the sum of its proper divisors (104129).

637441 is a wasteful number, since it uses less digits than its factorization.

637441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13023 (or 13016 counting only the distinct ones).

The product of its digits is 2016, while the sum is 25.

The square root of 637441 is about 798.3990230455. The cubic root of 637441 is about 86.0623758763.

The spelling of 637441 in words is "six hundred thirty-seven thousand, four hundred forty-one".