63977814 has 24 divisors (see below), whose sum is σ = 139507680. Its totient is φ = 21189168.

The previous prime is 63977801. The next prime is 63977819. The reversal of 63977814 is 41877936.

63977814 is a `hidden beast` number, since 639 + 7 + 7 + 8 + 1 + 4 = 666.

63977814 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 63977814.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63977819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8494 + ... + 14145.

It is an arithmetic number, because the mean of its divisors is an integer number (5812820).

Almost surely, 2^63977814 is an apocalyptic number.

63977814 is an abundant number, since it is smaller than the sum of its proper divisors (75529866).

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

63977814 is a wasteful number, since it uses less digits than its factorization.

63977814 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22804 (or 22801 counting only the distinct ones).

The product of its digits is 254016, while the sum is 45.

The square root of 63977814 is about 7998.6132548086. The cubic root of 63977814 is about 399.9537738247.

The spelling of 63977814 in words is "sixty-three million, nine hundred seventy-seven thousand, eight hundred fourteen".