63145216 has 18 divisors (see below), whose sum is σ = 126044282. Its totient is φ = 31572480.

The previous prime is 63145213. The next prime is 63145217. The reversal of 63145216 is 61254136.

It can be written as a sum of positive squares in only one way, i.e., 61465600 + 1679616 = 7840^2 + 1296^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63145213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 123075 + ... + 123586.

Almost surely, 2^63145216 is an apocalyptic number.

It is an amenable number.

63145216 is a deficient number, since it is larger than the sum of its proper divisors (62899066).

63145216 is an equidigital number, since it uses as much as digits as its factorization.

63145216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 246677 (or 246663 counting only the distinct ones).

The product of its digits is 4320, while the sum is 28.

The square root of 63145216 is about 7946.3964159863. The cubic root of 63145216 is about 398.2112125228.

It can be divided in two parts, 6 and 3145216, that multiplied together give a triangular number (18871296 = T₆₁₄₃).

The spelling of 63145216 in words is "sixty-three million, one hundred forty-five thousand, two hundred sixteen".