631576072 has 8 divisors (see below), whose sum is σ = 1184205150. Its totient is φ = 315788032.

The previous prime is 631576063. The next prime is 631576079. The reversal of 631576072 is 270675136.

It can be written as a sum of positive squares in only one way, i.e., 601917156 + 29658916 = 24534^2 + 5446^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (631576079) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39473497 + ... + 39473512.

Almost surely, 2^631576072 is an apocalyptic number.

It is an amenable number.

631576072 is a deficient number, since it is larger than the sum of its proper divisors (552629078).

631576072 is a wasteful number, since it uses less digits than its factorization.

631576072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78947015 (or 78947011 counting only the distinct ones).

The product of its (nonzero) digits is 52920, while the sum is 37.

The square root of 631576072 is about 25131.1772903698. The cubic root of 631576072 is about 857.9761640692.

The spelling of 631576072 in words is "six hundred thirty-one million, five hundred seventy-six thousand, seventy-two".