63415213 has 2 divisors, whose sum is σ = 63415214. Its totient is φ = 63415212.

The previous prime is 63415207. The next prime is 63415249. The reversal of 63415213 is 31251436.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 54730404 + 8684809 = 7398^2 + 2947^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-63415213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (63415013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31707606 + 31707607.

It is an arithmetic number, because the mean of its divisors is an integer number (31707607).

Almost surely, 2^63415213 is an apocalyptic number.

It is an amenable number.

63415213 is a deficient number, since it is larger than the sum of its proper divisors (1).

63415213 is an equidigital number, since it uses as much as digits as its factorization.

63415213 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2160, while the sum is 25.

The square root of 63415213 is about 7963.3669386761. The cubic root of 63415213 is about 398.7779641228. Note that the first 3 decimals are identical.

Adding to 63415213 its reverse (31251436), we get a palindrome (94666649).

The spelling of 63415213 in words is "sixty-three million, four hundred fifteen thousand, two hundred thirteen".