493631 has 4 divisors (see below), whose sum is σ = 495264. Its totient is φ = 492000.

The previous prime is 493627. The next prime is 493643. The reversal of 493631 is 136394.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 493631 - 2² = 493627 is a prime.

It is a super-2 number, since 2×493631² = 487343128322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 493631.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (493621) 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 3 ways as a sum of consecutive naturals, for example, 215 + ... + 1016.

It is an arithmetic number, because the mean of its divisors is an integer number (123816).

2⁴⁹³⁶³¹ is an apocalyptic number.

493631 is a deficient number, since it is larger than the sum of its proper divisors (1633).

493631 is a wasteful number, since it uses less digits than its factorization.

493631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1632.

The product of its digits is 1944, while the sum is 26.

The square root of 493631 is about 702.5887844251. The cubic root of 493631 is about 79.0316062178.

The spelling of 493631 in words is "four hundred ninety-three thousand, six hundred thirty-one".