631984495 has 8 divisors (see below), whose sum is σ = 758541600. Its totient is φ = 505480800.

The previous prime is 631984481. The next prime is 631984499. The reversal of 631984495 is 594489136.

It is a happy number.

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

It is not a de Polignac number, because 631984495 - 2⁹ = 631983983 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (631984499) 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, 20481 + ... + 41029.

It is an arithmetic number, because the mean of its divisors is an integer number (94817700).

Almost surely, 2^631984495 is an apocalyptic number.

631984495 is a deficient number, since it is larger than the sum of its proper divisors (126557105).

631984495 is a wasteful number, since it uses less digits than its factorization.

631984495 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26705.

The product of its digits is 933120, while the sum is 49.

The square root of 631984495 is about 25139.3018001694. The cubic root of 631984495 is about 858.1610674701.

The spelling of 631984495 in words is "six hundred thirty-one million, nine hundred eighty-four thousand, four hundred ninety-five".