68705923 has 8 divisors (see below), whose sum is σ = 80717616. Its totient is φ = 57655200.

The previous prime is 68705867. The next prime is 68705927. The reversal of 68705923 is 32950786.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 68705923 - 2¹⁷ = 68574851 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68705927) 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 7 ways as a sum of consecutive naturals, for example, 240088 + ... + 240373.

It is an arithmetic number, because the mean of its divisors is an integer number (10089702).

Almost surely, 2^68705923 is an apocalyptic number.

68705923 is a deficient number, since it is larger than the sum of its proper divisors (12011693).

68705923 is a wasteful number, since it uses less digits than its factorization.

68705923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 480485.

The product of its (nonzero) digits is 90720, while the sum is 40.

The square root of 68705923 is about 8288.9036066298. The cubic root of 68705923 is about 409.5730693754.

The spelling of 68705923 in words is "sixty-eight million, seven hundred five thousand, nine hundred twenty-three".