63969696 has 144 divisors (see below), whose sum is σ = 217183680. Its totient is φ = 18264960.

The previous prime is 63969683. The next prime is 63969727. The reversal of 63969696 is 69696936.

It is a tau number, because it is divible by the number of its divisors (144).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 41581 + ... + 43091.

It is an arithmetic number, because the mean of its divisors is an integer number (1508220).

Almost surely, 2^63969696 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 63969696, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (108591840).

63969696 is an abundant number, since it is smaller than the sum of its proper divisors (153213984).

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

63969696 is a wasteful number, since it uses less digits than its factorization.

63969696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1544 (or 1523 counting only the distinct ones).

The product of its digits is 2834352, while the sum is 54.

The square root of 63969696 is about 7998.1057757447. The cubic root of 63969696 is about 399.9368566995.

The spelling of 63969696 in words is "sixty-three million, nine hundred sixty-nine thousand, six hundred ninety-six".