63847680 has 144 divisors (see below), whose sum is σ = 219770880. Its totient is φ = 15704064.

The previous prime is 63847643. The next prime is 63847703. The reversal of 63847680 is 8674836.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49281 + ... + 50559.

Almost surely, 2^63847680 is an apocalyptic number.

63847680 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 63847680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (109885440).

63847680 is an abundant number, since it is smaller than the sum of its proper divisors (155923200).

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

63847680 is a wasteful number, since it uses less digits than its factorization.

63847680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1316 (or 1302 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 42.

The square root of 63847680 is about 7990.4743288493. The cubic root of 63847680 is about 399.6824145822.

The spelling of 63847680 in words is "sixty-three million, eight hundred forty-seven thousand, six hundred eighty".