608631 has 4 divisors (see below), whose sum is σ = 811512. Its totient is φ = 405752.

The previous prime is 608611. The next prime is 608633. The reversal of 608631 is 136806.

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 608631 - 2¹⁵ = 575863 is a prime.

It is a super-2 number, since 2×608631² = 740863388322, which contains 22 as substring.

It is a D-number.

608631 is a lucky number.

It is a plaindrome in base 8.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (608633) 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, 101436 + ... + 101441.

It is an arithmetic number, because the mean of its divisors is an integer number (202878).

2⁶⁰⁸⁶³¹ is an apocalyptic number.

608631 is a deficient number, since it is larger than the sum of its proper divisors (202881).

608631 is a wasteful number, since it uses less digits than its factorization.

608631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202880.

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 608631 is about 780.1480628701. The cubic root of 608631 is about 84.7457686212.

The spelling of 608631 in words is "six hundred eight thousand, six hundred thirty-one".