631662 has 8 divisors (see below), whose sum is σ = 1263336. Its totient is φ = 210552.

The previous prime is 631643. The next prime is 631667. The reversal of 631662 is 266136.

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

631662 is an admirable number.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (631667) by changing a digit.

631662 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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, 52633 + ... + 52644.

It is an arithmetic number, because the mean of its divisors is an integer number (157917).

2⁶³¹⁶⁶² is an apocalyptic number.

631662 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

631662 is a wasteful number, since it uses less digits than its factorization.

631662 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105282.

The product of its digits is 1296, while the sum is 24.

The square root of 631662 is about 794.7716653228. The cubic root of 631662 is about 85.8015072464.

Adding to 631662 its reverse (266136), we get a palindrome (897798).

The spelling of 631662 in words is "six hundred thirty-one thousand, six hundred sixty-two".