631698 has 16 divisors (see below), whose sum is σ = 1274880. Its totient is φ = 208656.

The previous prime is 631681. The next prime is 631711. The reversal of 631698 is 896136.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 631698.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 348 + ... + 1176.

It is an arithmetic number, because the mean of its divisors is an integer number (79680).

2⁶³¹⁶⁹⁸ is an apocalyptic number.

631698 is an abundant number, since it is smaller than the sum of its proper divisors (643182).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

631698 is a wasteful number, since it uses less digits than its factorization.

631698 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 961.

The product of its digits is 7776, while the sum is 33.

The square root of 631698 is about 794.7943130144. The cubic root of 631698 is about 85.8031372297.

The spelling of 631698 in words is "six hundred thirty-one thousand, six hundred ninety-eight".