63945801 has 16 divisors (see below), whose sum is σ = 94904320. Its totient is φ = 42554160.

The previous prime is 63945797. The next prime is 63945809. The reversal of 63945801 is 10854936.

It is not a de Polignac number, because 63945801 - 2² = 63945797 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63945809) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16056 + ... + 19638.

It is an arithmetic number, because the mean of its divisors is an integer number (5931520).

Almost surely, 2^63945801 is an apocalyptic number.

It is an amenable number.

63945801 is a deficient number, since it is larger than the sum of its proper divisors (30958519).

63945801 is a wasteful number, since it uses less digits than its factorization.

63945801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4253 (or 4247 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The square root of 63945801 is about 7996.6118450254. The cubic root of 63945801 is about 399.8870535274.

It can be divided in two parts, 63945 and 801, that added together give a palindrome (64746).

The spelling of 63945801 in words is "sixty-three million, nine hundred forty-five thousand, eight hundred one".