631746346 has 16 divisors (see below), whose sum is σ = 1181448000. Its totient is φ = 246134880.

The previous prime is 631746293. The next prime is 631746347. The reversal of 631746346 is 643647136.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 631746299 and 631746308.

It is not an unprimeable number, because it can be changed into a prime (631746347) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2050971 + ... + 2051278.

It is an arithmetic number, because the mean of its divisors is an integer number (73840500).

Almost surely, 2^631746346 is an apocalyptic number.

631746346 is a deficient number, since it is larger than the sum of its proper divisors (549701654).

631746346 is a wasteful number, since it uses less digits than its factorization.

631746346 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4102269.

The product of its digits is 217728, while the sum is 40.

The square root of 631746346 is about 25134.5647664725. The cubic root of 631746346 is about 858.0532610931.

The spelling of 631746346 in words is "six hundred thirty-one million, seven hundred forty-six thousand, three hundred forty-six".