63788005 has 16 divisors (see below), whose sum is σ = 79713648. Its totient is φ = 48960000.

The previous prime is 63787981. The next prime is 63788047. The reversal of 63788005 is 50088736.

It can be written as a sum of positive squares in 8 ways, for example, as 47320641 + 16467364 = 6879^2 + 4058^2 .

It is a de Polignac number, because none of the positive numbers 2^k-63788005 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9955 + ... + 15055.

It is an arithmetic number, because the mean of its divisors is an integer number (4982103).

Almost surely, 2^63788005 is an apocalyptic number.

It is an amenable number.

63788005 is a deficient number, since it is larger than the sum of its proper divisors (15925643).

63788005 is a wasteful number, since it uses less digits than its factorization.

63788005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5208.

The product of its (nonzero) digits is 40320, while the sum is 37.

The square root of 63788005 is about 7986.7393221514. The cubic root of 63788005 is about 399.5578552000.

The spelling of 63788005 in words is "sixty-three million, seven hundred eighty-eight thousand, five".