631732642 has 8 divisors (see below), whose sum is σ = 947720016. Its totient is φ = 315825972.

The previous prime is 631732609. The next prime is 631732721. The reversal of 631732642 is 246237136.

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

It is a super-2 number, since 2×631732642² = 798172261936600328, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 631732598 and 631732607.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6393 + ... + 36115.

It is an arithmetic number, because the mean of its divisors is an integer number (118465002).

Almost surely, 2^631732642 is an apocalyptic number.

631732642 is a deficient number, since it is larger than the sum of its proper divisors (315987374).

631732642 is a wasteful number, since it uses less digits than its factorization.

631732642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40352.

The product of its digits is 36288, while the sum is 34.

The square root of 631732642 is about 25134.2921523563. The cubic root of 631732642 is about 858.0470566795.

Adding to 631732642 its reverse (246237136), we get a palindrome (877969778).

The spelling of 631732642 in words is "six hundred thirty-one million, seven hundred thirty-two thousand, six hundred forty-two".