68980055 has 16 divisors (see below), whose sum is σ = 84188160. Its totient is φ = 54249888.

The previous prime is 68980031. The next prime is 68980057. The reversal of 68980055 is 55008986.

It is a cyclic number.

It is not a de Polignac number, because 68980055 - 2²² = 64785751 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 68979994 and 68980021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68980057) 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, 148754 + ... + 149216.

It is an arithmetic number, because the mean of its divisors is an integer number (5261760).

Almost surely, 2^68980055 is an apocalyptic number.

68980055 is a deficient number, since it is larger than the sum of its proper divisors (15208105).

68980055 is a wasteful number, since it uses less digits than its factorization.

68980055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 910.

The product of its (nonzero) digits is 86400, while the sum is 41.

The square root of 68980055 is about 8305.4232282286. The cubic root of 68980055 is about 410.1170694843.

The spelling of 68980055 in words is "sixty-eight million, nine hundred eighty thousand, fifty-five".