63243205 has 8 divisors (see below), whose sum is σ = 76286232. Its totient is φ = 50331648.

The previous prime is 63243181. The next prime is 63243223. The reversal of 63243205 is 50234236.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 18714276 + 44528929 = 4326^2 + 6673^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a 12-Lehmer number, since φ(63243205) divides (63243205-1)¹².

It is a cyclic number.

It is not a de Polignac number, because 63243205 - 2¹⁹ = 62718917 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 63243205.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31804 + ... + 33733.

It is an arithmetic number, because the mean of its divisors is an integer number (9535779).

Almost surely, 2^63243205 is an apocalyptic number.

It is an amenable number.

63243205 is a deficient number, since it is larger than the sum of its proper divisors (13043027).

63243205 is a wasteful number, since it uses less digits than its factorization.

63243205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65735.

The product of its (nonzero) digits is 4320, while the sum is 25.

The square root of 63243205 is about 7952.5596508294. The cubic root of 63243205 is about 398.4170879867.

The spelling of 63243205 in words is "sixty-three million, two hundred forty-three thousand, two hundred five".