63138217 has 4 divisors (see below), whose sum is σ = 63168336. Its totient is φ = 63108100.

The previous prime is 63138209. The next prime is 63138223. The reversal of 63138217 is 71283136.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 63138217 - 2³ = 63138209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63138247) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11659 + ... + 16192.

It is an arithmetic number, because the mean of its divisors is an integer number (15792084).

Almost surely, 2^63138217 is an apocalyptic number.

It is an amenable number.

63138217 is a deficient number, since it is larger than the sum of its proper divisors (30119).

63138217 is a wasteful number, since it uses less digits than its factorization.

63138217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30118.

The product of its digits is 6048, while the sum is 31.

The square root of 63138217 is about 7945.9560154836. The cubic root of 63138217 is about 398.1964994353.

The spelling of 63138217 in words is "sixty-three million, one hundred thirty-eight thousand, two hundred seventeen".