68118405 has 16 divisors (see below), whose sum is σ = 115401024. Its totient is φ = 34192640.

The previous prime is 68118403. The next prime is 68118467. The reversal of 68118405 is 50481186.

It is not a de Polignac number, because 68118405 - 2¹ = 68118403 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68118403) 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, 133311 + ... + 133820.

It is an arithmetic number, because the mean of its divisors is an integer number (7212564).

Almost surely, 2^68118405 is an apocalyptic number.

It is an amenable number.

68118405 is a deficient number, since it is larger than the sum of its proper divisors (47282619).

68118405 is a wasteful number, since it uses less digits than its factorization.

68118405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 267156.

The product of its (nonzero) digits is 7680, while the sum is 33.

The square root of 68118405 is about 8253.3874863598. The cubic root of 68118405 is about 408.4022788852.

The spelling of 68118405 in words is "sixty-eight million, one hundred eighteen thousand, four hundred five".