78551713 has 16 divisors (see below), whose sum is σ = 85173120. Its totient is φ = 72172800.

The previous prime is 78551701. The next prime is 78551729. The reversal of 78551713 is 31715587.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-78551713 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78551113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 218628 + ... + 218986.

It is an arithmetic number, because the mean of its divisors is an integer number (5323320).

Almost surely, 2^78551713 is an apocalyptic number.

It is an amenable number.

78551713 is a deficient number, since it is larger than the sum of its proper divisors (6621407).

78551713 is a wasteful number, since it uses less digits than its factorization.

78551713 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 648.

The product of its digits is 29400, while the sum is 37.

The square root of 78551713 is about 8862.9404262919. The cubic root of 78551713 is about 428.2708874868.

The spelling of 78551713 in words is "seventy-eight million, five hundred fifty-one thousand, seven hundred thirteen".