631753540 has 48 divisors (see below), whose sum is σ = 1486425024. Its totient is φ = 223516800.

The previous prime is 631753523. The next prime is 631753547. The reversal of 631753540 is 45357136.

631753540 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×631753540² = 798225070605063200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 631753496 and 631753505.

It is not an unprimeable number, because it can be changed into a prime (631753547) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30666 + ... + 46945.

It is an arithmetic number, because the mean of its divisors is an integer number (30967188).

Almost surely, 2^631753540 is an apocalyptic number.

It is an amenable number.

631753540 is an abundant number, since it is smaller than the sum of its proper divisors (854671484).

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

631753540 is a wasteful number, since it uses less digits than its factorization.

631753540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77668 (or 77666 counting only the distinct ones).

The product of its (nonzero) digits is 37800, while the sum is 34.

The square root of 631753540 is about 25134.7078757641. The cubic root of 631753540 is about 858.0565181027.

The spelling of 631753540 in words is "six hundred thirty-one million, seven hundred fifty-three thousand, five hundred forty".