631678748 has 6 divisors (see below), whose sum is σ = 1105437816. Its totient is φ = 315839372.

The previous prime is 631678711. The next prime is 631678757. The reversal of 631678748 is 847876136.

631678748 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 631678696 and 631678705.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78959840 + ... + 78959847.

It is an arithmetic number, because the mean of its divisors is an integer number (184239636).

Almost surely, 2^631678748 is an apocalyptic number.

It is an amenable number.

631678748 is a deficient number, since it is larger than the sum of its proper divisors (473759068).

631678748 is a wasteful number, since it uses less digits than its factorization.

631678748 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157919691 (or 157919689 counting only the distinct ones).

The product of its digits is 1354752, while the sum is 50.

The square root of 631678748 is about 25133.2200085862. The cubic root of 631678748 is about 858.0226555853.

The spelling of 631678748 in words is "six hundred thirty-one million, six hundred seventy-eight thousand, seven hundred forty-eight".