68394255 has 16 divisors (see below), whose sum is σ = 110221440. Its totient is φ = 36213408.

The previous prime is 68394251. The next prime is 68394257. The reversal of 68394255 is 55249386.

It is not a de Polignac number, because 68394255 - 2² = 68394251 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68394251) 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, 14317 + ... + 18486.

It is an arithmetic number, because the mean of its divisors is an integer number (6888840).

Almost surely, 2^68394255 is an apocalyptic number.

68394255 is a deficient number, since it is larger than the sum of its proper divisors (41827185).

68394255 is a wasteful number, since it uses less digits than its factorization.

68394255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32950.

The product of its digits is 259200, while the sum is 42.

The square root of 68394255 is about 8270.0819222061. The cubic root of 68394255 is about 408.9528204417.

The spelling of 68394255 in words is "sixty-eight million, three hundred ninety-four thousand, two hundred fifty-five".