631946984 has 64 divisors (see below), whose sum is σ = 1296861840. Its totient is φ = 287539200.

The previous prime is 631946983. The next prime is 631946999. The reversal of 631946984 is 489649136.

It can be written as a sum of positive squares in 8 ways, for example, as 267976900 + 363970084 = 16370^2 + 19078^2 .

It is not an unprimeable number, because it can be changed into a prime (631946983) 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 15 ways as a sum of consecutive naturals, for example, 525584 + ... + 526784.

Almost surely, 2^631946984 is an apocalyptic number.

It is an amenable number.

631946984 is an abundant number, since it is smaller than the sum of its proper divisors (664914856).

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

631946984 is a wasteful number, since it uses less digits than its factorization.

631946984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1350 (or 1346 counting only the distinct ones).

The product of its digits is 1119744, while the sum is 50.

The square root of 631946984 is about 25138.5557262147. Note that the first 3 decimals coincide. The cubic root of 631946984 is about 858.1440886165.

The spelling of 631946984 in words is "six hundred thirty-one million, nine hundred forty-six thousand, nine hundred eighty-four".