63903065 has 4 divisors (see below), whose sum is σ = 76683684. Its totient is φ = 51122448.

The previous prime is 63903043. The next prime is 63903067. The reversal of 63903065 is 56030936.

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 43072969 + 20830096 = 6563^2 + 4564^2 .

It is a cyclic number.

It is not a de Polignac number, because 63903065 - 2¹² = 63898969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63903067) 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, 6390302 + ... + 6390311.

It is an arithmetic number, because the mean of its divisors is an integer number (19170921).

Almost surely, 2^63903065 is an apocalyptic number.

It is an amenable number.

63903065 is a deficient number, since it is larger than the sum of its proper divisors (12780619).

63903065 is a wasteful number, since it uses less digits than its factorization.

63903065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12780618.

The product of its (nonzero) digits is 14580, while the sum is 32.

The square root of 63903065 is about 7993.9392667195. The cubic root of 63903065 is about 399.7979500401.

The spelling of 63903065 in words is "sixty-three million, nine hundred three thousand, sixty-five".