68731005 has 32 divisors (see below), whose sum is σ = 126943488. Its totient is φ = 31104000.

The previous prime is 68731001. The next prime is 68731009. The reversal of 68731005 is 50013786.

It is an interprime number because it is at equal distance from previous prime (68731001) and next prime (68731009).

It is not a de Polignac number, because 68731005 - 2² = 68731001 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68731001) 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 31 ways as a sum of consecutive naturals, for example, 7365 + ... + 13845.

It is an arithmetic number, because the mean of its divisors is an integer number (3966984).

Almost surely, 2^68731005 is an apocalyptic number.

It is an amenable number.

68731005 is a deficient number, since it is larger than the sum of its proper divisors (58212483).

68731005 is a wasteful number, since it uses less digits than its factorization.

68731005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6597.

The product of its (nonzero) digits is 5040, while the sum is 30.

The square root of 68731005 is about 8290.4164551607. The cubic root of 68731005 is about 409.6229033220.

The spelling of 68731005 in words is "sixty-eight million, seven hundred thirty-one thousand, five".