63662213 has 4 divisors (see below), whose sum is σ = 64246380. Its totient is φ = 63078048.

The previous prime is 63662177. The next prime is 63662233. The reversal of 63662213 is 31226636.

63662213 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 57501889 + 6160324 = 7583^2 + 2482^2 .

It is a cyclic number.

It is not a de Polignac number, because 63662213 - 2¹⁸ = 63400069 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63662233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 291920 + ... + 292137.

It is an arithmetic number, because the mean of its divisors is an integer number (16061595).

Almost surely, 2^63662213 is an apocalyptic number.

It is an amenable number.

63662213 is a deficient number, since it is larger than the sum of its proper divisors (584167).

63662213 is a wasteful number, since it uses less digits than its factorization.

63662213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 584166.

The product of its digits is 7776, while the sum is 29.

The square root of 63662213 is about 7978.8603822852. The cubic root of 63662213 is about 399.2950353754.

Adding to 63662213 its reverse (31226636), we get a palindrome (94888849).

The spelling of 63662213 in words is "sixty-three million, six hundred sixty-two thousand, two hundred thirteen".