63945368 has 8 divisors (see below), whose sum is σ = 119897580. Its totient is φ = 31972680.

The previous prime is 63945367. The next prime is 63945373. The reversal of 63945368 is 86354936.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63945367) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3996578 + ... + 3996593.

Almost surely, 2^63945368 is an apocalyptic number.

It is an amenable number.

63945368 is a deficient number, since it is larger than the sum of its proper divisors (55952212).

63945368 is a wasteful number, since it uses less digits than its factorization.

63945368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7993177 (or 7993173 counting only the distinct ones).

The product of its digits is 466560, while the sum is 44.

The square root of 63945368 is about 7996.5847710132. The cubic root of 63945368 is about 399.8861509324.

The spelling of 63945368 in words is "sixty-three million, nine hundred forty-five thousand, three hundred sixty-eight".