63409368 has 64 divisors (see below), whose sum is σ = 174021120. Its totient is φ = 19094400.

The previous prime is 63409349. The next prime is 63409373. The reversal of 63409368 is 86390436.

It is a Cunningham number, because it is equal to 7963²-1.

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, 47121 + ... + 48447.

It is an arithmetic number, because the mean of its divisors is an integer number (2719080).

Almost surely, 2^63409368 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 63409368, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (87010560).

63409368 is an abundant number, since it is smaller than the sum of its proper divisors (110611752).

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

63409368 is a wasteful number, since it uses less digits than its factorization.

63409368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1528 (or 1524 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 39.

The square root of 63409368 is about 7962.9999372096. Note that the first 4 decimals coincide. The cubic root of 63409368 is about 398.7657119165.

The spelling of 63409368 in words is "sixty-three million, four hundred nine thousand, three hundred sixty-eight".