63771942 has 64 divisors (see below), whose sum is σ = 148619520. Its totient is φ = 18071424.

The previous prime is 63771887. The next prime is 63771943. The reversal of 63771942 is 24917736.

63771942 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a self number, because there is not a number n which added to its sum of digits gives 63771942.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63771943) 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 31 ways as a sum of consecutive naturals, for example, 54253 + ... + 55415.

It is an arithmetic number, because the mean of its divisors is an integer number (2322180).

Almost surely, 2^63771942 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 63771942, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74309760).

63771942 is an abundant number, since it is smaller than the sum of its proper divisors (84847578).

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

63771942 is a wasteful number, since it uses less digits than its factorization.

63771942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1237.

The product of its digits is 63504, while the sum is 39.

The square root of 63771942 is about 7985.7336544616. The cubic root of 63771942 is about 399.5243136973.

The spelling of 63771942 in words is "sixty-three million, seven hundred seventy-one thousand, nine hundred forty-two".