63798540 has 96 divisors (see below), whose sum is σ = 193729536. Its totient is φ = 15594240.

The previous prime is 63798533. The next prime is 63798551. The reversal of 63798540 is 4589736.

It is a happy number.

It is a super-2 number, since 2×63798540² = 8140507412263200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 63798492 and 63798501.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 204985 + ... + 205295.

It is an arithmetic number, because the mean of its divisors is an integer number (2018016).

Almost surely, 2^63798540 is an apocalyptic number.

63798540 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 63798540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (96864768).

63798540 is an abundant number, since it is smaller than the sum of its proper divisors (129930996).

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

63798540 is a wasteful number, since it uses less digits than its factorization.

63798540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 599 (or 597 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 42.

The square root of 63798540 is about 7987.3988256503. The cubic root of 63798540 is about 399.5798505072.

The spelling of 63798540 in words is "sixty-three million, seven hundred ninety-eight thousand, five hundred forty".