68108455 has 4 divisors (see below), whose sum is σ = 81730152. Its totient is φ = 54486760.

The previous prime is 68108429. The next prime is 68108461. The reversal of 68108455 is 55480186.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 68108455 - 2⁹ = 68107943 is a prime.

It is a Duffinian number.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 6810841 + ... + 6810850.

It is an arithmetic number, because the mean of its divisors is an integer number (20432538).

Almost surely, 2^68108455 is an apocalyptic number.

68108455 is a deficient number, since it is larger than the sum of its proper divisors (13621697).

68108455 is a wasteful number, since it uses less digits than its factorization.

68108455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13621696.

The product of its (nonzero) digits is 38400, while the sum is 37.

The square root of 68108455 is about 8252.7846815484. The cubic root of 68108455 is about 408.3823929208.

The spelling of 68108455 in words is "sixty-eight million, one hundred eight thousand, four hundred fifty-five".