63872717 has 4 divisors (see below), whose sum is σ = 64003296. Its totient is φ = 63742140.

The previous prime is 63872713. The next prime is 63872729. The reversal of 63872717 is 71727836.

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 63872717 - 2² = 63872713 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 (63872713) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64553 + ... + 65534.

It is an arithmetic number, because the mean of its divisors is an integer number (16000824).

Almost surely, 2^63872717 is an apocalyptic number.

It is an amenable number.

63872717 is a deficient number, since it is larger than the sum of its proper divisors (130579).

63872717 is a wasteful number, since it uses less digits than its factorization.

63872717 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130578.

The product of its digits is 98784, while the sum is 41.

The square root of 63872717 is about 7992.0408532489. The cubic root of 63872717 is about 399.7346510972.

The spelling of 63872717 in words is "sixty-three million, eight hundred seventy-two thousand, seven hundred seventeen".