631655046 has 96 divisors (see below), whose sum is σ = 1546212096. Its totient is φ = 184680000.

The previous prime is 631655041. The next prime is 631655047. The reversal of 631655046 is 640556136.

631655046 is a `hidden beast` number, since 63 + 1 + 6 + 550 + 46 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 631655046.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (631655041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1105941 + ... + 1106511.

It is an arithmetic number, because the mean of its divisors is an integer number (16106376).

Almost surely, 2^631655046 is an apocalyptic number.

631655046 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 631655046, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (773106048).

631655046 is an abundant number, since it is smaller than the sum of its proper divisors (914557050).

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

631655046 is a wasteful number, since it uses less digits than its factorization.

631655046 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 778 (or 775 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 36.

The square root of 631655046 is about 25132.7484768379. The cubic root of 631655046 is about 858.0119238078.

The spelling of 631655046 in words is "six hundred thirty-one million, six hundred fifty-five thousand, forty-six".