631726 has 8 divisors (see below), whose sum is σ = 951984. Its totient is φ = 314400.

The previous prime is 631723. The next prime is 631733. The reversal of 631726 is 627136.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 631726.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (631723) 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, 75 + ... + 1126.

It is an arithmetic number, because the mean of its divisors is an integer number (118998).

2⁶³¹⁷²⁶ is an apocalyptic number.

631726 is a deficient number, since it is larger than the sum of its proper divisors (320258).

631726 is a wasteful number, since it uses less digits than its factorization.

631726 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1466.

The product of its digits is 1512, while the sum is 25.

The square root of 631726 is about 794.8119274394. The cubic root of 631726 is about 85.8044049517.

The spelling of 631726 in words is "six hundred thirty-one thousand, seven hundred twenty-six".