68291055 has 36 divisors (see below), whose sum is σ = 137701512. Its totient is φ = 31217760.

The previous prime is 68291053. The next prime is 68291077. The reversal of 68291055 is 55019286.

It is a happy number.

It is not a de Polignac number, because 68291055 - 2¹ = 68291053 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68291051) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 13281 + ... + 17690.

It is an arithmetic number, because the mean of its divisors is an integer number (3825042).

Almost surely, 2^68291055 is an apocalyptic number.

68291055 is an abundant number, since it is smaller than the sum of its proper divisors (69410457).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

68291055 is a wasteful number, since it uses less digits than its factorization.

68291055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30996 (or 30986 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 36.

The square root of 68291055 is about 8263.8402090069. The cubic root of 68291055 is about 408.7470274452.

The spelling of 68291055 in words is "sixty-eight million, two hundred ninety-one thousand, fifty-five".