63903834 has 48 divisors (see below), whose sum is σ = 145027584. Its totient is φ = 20311200.

The previous prime is 63903817. The next prime is 63903839. The reversal of 63903834 is 43830936.

It is not an unprimeable number, because it can be changed into a prime (63903839) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 38812 + ... + 40424.

It is an arithmetic number, because the mean of its divisors is an integer number (3021408).

Almost surely, 2^63903834 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 63903834, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (72513792).

63903834 is an abundant number, since it is smaller than the sum of its proper divisors (81123750).

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

63903834 is a wasteful number, since it uses less digits than its factorization.

63903834 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1723 (or 1720 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 36.

The square root of 63903834 is about 7993.9873655142. The cubic root of 63903834 is about 399.7995537367.

The spelling of 63903834 in words is "sixty-three million, nine hundred three thousand, eight hundred thirty-four".