68769155 has 16 divisors (see below), whose sum is σ = 101567424. Its totient is φ = 43528320.

The previous prime is 68769137. The next prime is 68769157. The reversal of 68769155 is 55196786.

It is not a de Polignac number, because 68769155 - 2⁶ = 68769091 is a prime.

It is not an unprimeable number, because it can be changed into a prime (68769157) by changing a digit.

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, 75116 + ... + 76025.

It is an arithmetic number, because the mean of its divisors is an integer number (6347964).

Almost surely, 2^68769155 is an apocalyptic number.

68769155 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

68769155 is a deficient number, since it is larger than the sum of its proper divisors (32798269).

68769155 is a wasteful number, since it uses less digits than its factorization.

68769155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151166.

The product of its digits is 453600, while the sum is 47.

The square root of 68769155 is about 8292.7169854035. The cubic root of 68769155 is about 409.6986780679.

The spelling of 68769155 in words is "sixty-eight million, seven hundred sixty-nine thousand, one hundred fifty-five".