63947906 has 8 divisors (see below), whose sum is σ = 104642064. Its totient is φ = 29067220.

The previous prime is 63947903. The next prime is 63947911. The reversal of 63947906 is 60974936.

63947906 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a zygodrome in base 3.

It is not an unprimeable number, because it can be changed into a prime (63947903) 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 3 ways as a sum of consecutive naturals, for example, 1453340 + ... + 1453383.

It is an arithmetic number, because the mean of its divisors is an integer number (13080258).

Almost surely, 2^63947906 is an apocalyptic number.

63947906 is a deficient number, since it is larger than the sum of its proper divisors (40694158).

63947906 is a wasteful number, since it uses less digits than its factorization.

63947906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2906736.

The product of its (nonzero) digits is 244944, while the sum is 44.

The square root of 63947906 is about 7996.7434621851. The cubic root of 63947906 is about 399.8914413736.

The spelling of 63947906 in words is "sixty-three million, nine hundred forty-seven thousand, nine hundred six".