487731 has 4 divisors (see below), whose sum is σ = 650312. Its totient is φ = 325152.

The previous prime is 487727. The next prime is 487733. The reversal of 487731 is 137784.

It is a happy number.

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

It is not a de Polignac number, because 487731 - 2² = 487727 is a prime.

It is a super-2 number, since 2×487731² = 475763056722, which contains 22 as substring.

It is a D-number.

It is a Duffinian number.

487731 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (487733) 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, 81286 + ... + 81291.

It is an arithmetic number, because the mean of its divisors is an integer number (162578).

2⁴⁸⁷⁷³¹ is an apocalyptic number.

487731 is a deficient number, since it is larger than the sum of its proper divisors (162581).

487731 is a wasteful number, since it uses less digits than its factorization.

487731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162580.

The product of its digits is 4704, while the sum is 30.

The square root of 487731 is about 698.3774051328. The cubic root of 487731 is about 78.7154749138.

The spelling of 487731 in words is "four hundred eighty-seven thousand, seven hundred thirty-one".