631598642 has 8 divisors (see below), whose sum is σ = 950770332. Its totient is φ = 314675200.

The previous prime is 631598641. The next prime is 631598651. The reversal of 631598642 is 246895136.

631598642 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 542843401 + 88755241 = 23299^2 + 9421^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 631598593 and 631598602.

It is not an unprimeable number, because it can be changed into a prime (631598641) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 561359 + ... + 562482.

Almost surely, 2^631598642 is an apocalyptic number.

631598642 is a deficient number, since it is larger than the sum of its proper divisors (319171690).

631598642 is a wasteful number, since it uses less digits than its factorization.

631598642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1124124.

The product of its digits is 311040, while the sum is 44.

The square root of 631598642 is about 25131.6263301840. The cubic root of 631598642 is about 857.9863841584.

The spelling of 631598642 in words is "six hundred thirty-one million, five hundred ninety-eight thousand, six hundred forty-two".