63968538 has 8 divisors (see below), whose sum is σ = 127937088. Its totient is φ = 21322844.

The previous prime is 63968537. The next prime is 63968539. The reversal of 63968538 is 83586936.

It is an interprime number because it is at equal distance from previous prime (63968537) and next prime (63968539).

It is a sphenic number, since it is the product of 3 distinct primes.

63968538 is an admirable number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (63968537) 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 in 3 ways as a sum of consecutive naturals, for example, 5330706 + ... + 5330717.

It is an arithmetic number, because the mean of its divisors is an integer number (15992136).

Almost surely, 2^63968538 is an apocalyptic number.

63968538 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

63968538 is a wasteful number, since it uses less digits than its factorization.

63968538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10661428.

The product of its digits is 933120, while the sum is 48.

The square root of 63968538 is about 7998.0333832762. The cubic root of 63968538 is about 399.9344434231.

The spelling of 63968538 in words is "sixty-three million, nine hundred sixty-eight thousand, five hundred thirty-eight".