68884555 has 16 divisors (see below), whose sum is σ = 85226688. Its totient is φ = 53424000.

The previous prime is 68884549. The next prime is 68884583. The reversal of 68884555 is 55548886.

It is a happy number.

It is not a de Polignac number, because 68884555 - 2³ = 68884547 is a prime.

It is a Duffinian number.

It is a plaindrome in base 13.

It is a junction number, because it is equal to n+sod(n) for n = 68884499 and 68884508.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20065 + ... + 23245.

It is an arithmetic number, because the mean of its divisors is an integer number (5326668).

Almost surely, 2^68884555 is an apocalyptic number.

68884555 is a deficient number, since it is larger than the sum of its proper divisors (16342133).

68884555 is a wasteful number, since it uses less digits than its factorization.

68884555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3318.

The product of its digits is 1536000, while the sum is 49.

The square root of 68884555 is about 8299.6719814701. The cubic root of 68884555 is about 409.9277187669.

It can be divided in two parts, 688845 and 55, that added together give a square (688900 = 830²).

The spelling of 68884555 in words is "sixty-eight million, eight hundred eighty-four thousand, five hundred fifty-five".