631460020 has 24 divisors (see below), whose sum is σ = 1351088424. Its totient is φ = 247817856.

The previous prime is 631460017. The next prime is 631460021. The reversal of 631460020 is 20064136.

It can be written as a sum of positive squares in 4 ways, for example, as 289136016 + 342324004 = 17004^2 + 18502^2 .

It is a junction number, because it is equal to n+sod(n) for n = 631459973 and 631460000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (631460021) 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 7 ways as a sum of consecutive naturals, for example, 296799 + ... + 298918.

It is an arithmetic number, because the mean of its divisors is an integer number (56295351).

Almost surely, 2^631460020 is an apocalyptic number.

It is an amenable number.

631460020 is an abundant number, since it is smaller than the sum of its proper divisors (719628404).

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

631460020 is a wasteful number, since it uses less digits than its factorization.

631460020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 595779 (or 595777 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 631460020 is about 25128.8682594342. The cubic root of 631460020 is about 857.9236098569.

The spelling of 631460020 in words is "six hundred thirty-one million, four hundred sixty thousand, twenty".