63959814 has 96 divisors (see below), whose sum is σ = 159654240. Its totient is φ = 18911232.

The previous prime is 63959813. The next prime is 63959821. The reversal of 63959814 is 41895936.

It is a happy number.

63959814 is a `hidden beast` number, since 639 + 5 + 9 + 8 + 1 + 4 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 63959814.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63959813) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 331302 + ... + 331494.

It is an arithmetic number, because the mean of its divisors is an integer number (1663065).

Almost surely, 2^63959814 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 63959814, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79827120).

63959814 is an abundant number, since it is smaller than the sum of its proper divisors (95694426).

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

63959814 is a wasteful number, since it uses less digits than its factorization.

63959814 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 259 (or 234 counting only the distinct ones).

The product of its digits is 233280, while the sum is 45.

The square root of 63959814 is about 7997.4879806099. The cubic root of 63959814 is about 399.9162616376.

The spelling of 63959814 in words is "sixty-three million, nine hundred fifty-nine thousand, eight hundred fourteen".