637479 has 12 divisors (see below), whose sum is σ = 928096. Its totient is φ = 421632.

The previous prime is 637471. The next prime is 637489. The reversal of 637479 is 974736.

It is not a de Polignac number, because 637479 - 2³ = 637471 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (637471) 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 11 ways as a sum of consecutive naturals, for example, 1554 + ... + 1920.

2⁶³⁷⁴⁷⁹ is an apocalyptic number.

637479 is a deficient number, since it is larger than the sum of its proper divisors (290617).

637479 is a wasteful number, since it uses less digits than its factorization.

637479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 566 (or 563 counting only the distinct ones).

The product of its digits is 31752, while the sum is 36.

The square root of 637479 is about 798.4228203152. The cubic root of 637479 is about 86.0640859981.

The spelling of 637479 in words is "six hundred thirty-seven thousand, four hundred seventy-nine".