493637 has 4 divisors (see below), whose sum is σ = 497100. Its totient is φ = 490176.

The previous prime is 493627. The next prime is 493643. The reversal of 493637 is 736394.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 736394 = 2 ⋅368197.

It can be written as a sum of positive squares in 2 ways, for example, as 264196 + 229441 = 514^2 + 479^2 .

It is a cyclic number.

It is not a de Polignac number, because 493637 - 2⁴ = 493621 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 (493607) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1508 + ... + 1805.

It is an arithmetic number, because the mean of its divisors is an integer number (124275).

2⁴⁹³⁶³⁷ is an apocalyptic number.

It is an amenable number.

493637 is a deficient number, since it is larger than the sum of its proper divisors (3463).

493637 is a wasteful number, since it uses less digits than its factorization.

493637 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3462.

The product of its digits is 13608, while the sum is 32.

The square root of 493637 is about 702.5930543352. The cubic root of 493637 is about 79.0319264217.

The spelling of 493637 in words is "four hundred ninety-three thousand, six hundred thirty-seven".