68776555 has 8 divisors (see below), whose sum is σ = 86120352. Its totient is φ = 52628928.

The previous prime is 68776549. The next prime is 68776559. The reversal of 68776555 is 55567786.

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

It is a cyclic number.

It is not a de Polignac number, because 68776555 - 2¹³ = 68768363 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 68776499 and 68776508.

It is not an unprimeable number, because it can be changed into a prime (68776559) 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 7 ways as a sum of consecutive naturals, for example, 298914 + ... + 299143.

It is an arithmetic number, because the mean of its divisors is an integer number (10765044).

Almost surely, 2^68776555 is an apocalyptic number.

68776555 is a deficient number, since it is larger than the sum of its proper divisors (17343797).

68776555 is a wasteful number, since it uses less digits than its factorization.

68776555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 598085.

The product of its digits is 1764000, while the sum is 49.

The square root of 68776555 is about 8293.1631480395. The cubic root of 68776555 is about 409.7133729383.

The spelling of 68776555 in words is "sixty-eight million, seven hundred seventy-six thousand, five hundred fifty-five".