63819642 has 16 divisors (see below), whose sum is σ = 127816992. Its totient is φ = 21243600.

The previous prime is 63819631. The next prime is 63819643. The reversal of 63819642 is 24691836.

It is a self number, because there is not a number n which added to its sum of digits gives 63819642.

It is not an unprimeable number, because it can be changed into a prime (63819643) 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, 2484 + ... + 11567.

It is an arithmetic number, because the mean of its divisors is an integer number (7988562).

Almost surely, 2^63819642 is an apocalyptic number.

63819642 is an abundant number, since it is smaller than the sum of its proper divisors (63997350).

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

63819642 is a wasteful number, since it uses less digits than its factorization.

63819642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14813.

The product of its digits is 62208, while the sum is 39.

The square root of 63819642 is about 7988.7196721377. The cubic root of 63819642 is about 399.6239006507.

The spelling of 63819642 in words is "sixty-three million, eight hundred nineteen thousand, six hundred forty-two".