63730216 has 24 divisors (see below), whose sum is σ = 131346810. Its totient is φ = 28967840.

The previous prime is 63730213. The next prime is 63730273. The reversal of 63730216 is 61203736.

It can be written as a sum of positive squares in only one way, i.e., 61685316 + 2044900 = 7854^2 + 1430^2 .

It is not an unprimeable number, because it can be changed into a prime (63730213) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 31951 + ... + 33886.

Almost surely, 2^63730216 is an apocalyptic number.

It is an amenable number.

63730216 is an abundant number, since it is smaller than the sum of its proper divisors (67616594).

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

63730216 is a wasteful number, since it uses less digits than its factorization.

63730216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65865 (or 65850 counting only the distinct ones).

The product of its (nonzero) digits is 4536, while the sum is 28.

The square root of 63730216 is about 7983.1206930623. The cubic root of 63730216 is about 399.4371583948.

The spelling of 63730216 in words is "sixty-three million, seven hundred thirty thousand, two hundred sixteen".