63105040 has 20 divisors (see below), whose sum is σ = 146719404. Its totient is φ = 25241984.

The previous prime is 63105001. The next prime is 63105041. The reversal of 63105040 is 4050136.

It can be written as a sum of positive squares in 2 ways, for example, as 7929856 + 55175184 = 2816^2 + 7428^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a junction number, because it is equal to n+sod(n) for n = 63104999 and 63105017.

It is not an unprimeable number, because it can be changed into a prime (63105041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 394327 + ... + 394486.

Almost surely, 2^63105040 is an apocalyptic number.

It is an amenable number.

63105040 is an abundant number, since it is smaller than the sum of its proper divisors (83614364).

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

63105040 is a wasteful number, since it uses less digits than its factorization.

63105040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 788826 (or 788820 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 63105040 is about 7943.8680754403. The cubic root of 63105040 is about 398.1267409460.

Adding to 63105040 its reverse (4050136), we get a palindrome (67155176).

The spelling of 63105040 in words is "sixty-three million, one hundred five thousand, forty".