63403216 has 10 divisors (see below), whose sum is σ = 122843762. Its totient is φ = 31701600.

The previous prime is 63403187. The next prime is 63403243. The reversal of 63403216 is 61230436.

It can be written as a sum of positive squares in only one way, i.e., 63361600 + 41616 = 7960^2 + 204^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1981335 + ... + 1981366.

Almost surely, 2^63403216 is an apocalyptic number.

It is an amenable number.

63403216 is a deficient number, since it is larger than the sum of its proper divisors (59440546).

63403216 is a wasteful number, since it uses less digits than its factorization.

63403216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3962709 (or 3962703 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 25.

The square root of 63403216 is about 7962.6136412613. The cubic root of 63403216 is about 398.7528153678.

The spelling of 63403216 in words is "sixty-three million, four hundred three thousand, two hundred sixteen".