63994805 has 8 divisors (see below), whose sum is σ = 87764352. Its totient is φ = 43882128.

The previous prime is 63994789. The next prime is 63994807. The reversal of 63994805 is 50849936.

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

It is a cyclic number.

It is not a de Polignac number, because 63994805 - 2⁴ = 63994789 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63994807) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 914177 + ... + 914246.

It is an arithmetic number, because the mean of its divisors is an integer number (10970544).

Almost surely, 2^63994805 is an apocalyptic number.

It is an amenable number.

63994805 is a deficient number, since it is larger than the sum of its proper divisors (23769547).

63994805 is a wasteful number, since it uses less digits than its factorization.

63994805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1828435.

The product of its (nonzero) digits is 233280, while the sum is 44.

The square root of 63994805 is about 7999.6753059109. The cubic root of 63994805 is about 399.9891767905.

The spelling of 63994805 in words is "sixty-three million, nine hundred ninety-four thousand, eight hundred five".