487631 has 4 divisors (see below), whose sum is σ = 493200. Its totient is φ = 482064.

The previous prime is 487607. The next prime is 487637. The reversal of 487631 is 136784.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-487631 is a prime.

It is a super-2 number, since 2×487631² = 475567984322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 487594 and 487603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (487637) 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, 2651 + ... + 2828.

It is an arithmetic number, because the mean of its divisors is an integer number (123300).

2⁴⁸⁷⁶³¹ is an apocalyptic number.

487631 is a deficient number, since it is larger than the sum of its proper divisors (5569).

487631 is an equidigital number, since it uses as much as digits as its factorization.

487631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5568.

The product of its digits is 4032, while the sum is 29.

The square root of 487631 is about 698.3058069356. The cubic root of 487631 is about 78.7100948406.

The spelling of 487631 in words is "four hundred eighty-seven thousand, six hundred thirty-one".