63840102 has 16 divisors (see below), whose sum is σ = 127831872. Its totient is φ = 21254760.

The previous prime is 63840089. The next prime is 63840103. The reversal of 63840102 is 20104836.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63840103) 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, 424 + ... + 11307.

It is an arithmetic number, because the mean of its divisors is an integer number (7989492).

Almost surely, 2^63840102 is an apocalyptic number.

63840102 is an abundant number, since it is smaller than the sum of its proper divisors (63991770).

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

63840102 is a wasteful number, since it uses less digits than its factorization.

63840102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12643.

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 63840102 is about 7990.0001251564. Note that the first 3 decimals coincide. The cubic root of 63840102 is about 399.6666013572. Note that the first 4 decimals are identical.

Adding to 63840102 its reverse (20104836), we get a palindrome (83944938).

The spelling of 63840102 in words is "sixty-three million, eight hundred forty thousand, one hundred two".