68000005 has 8 divisors (see below), whose sum is σ = 82517400. Its totient is φ = 53788416.

The previous prime is 68000003. The next prime is 68000021. The reversal of 68000005 is 50000086.

It can be written as a sum of positive squares in 4 ways, for example, as 332929 + 67667076 = 577^2 + 8226^2 .

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 68000005 - 2¹ = 68000003 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68000003) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 75960 + ... + 76849.

It is an arithmetic number, because the mean of its divisors is an integer number (10314675).

Almost surely, 2^68000005 is an apocalyptic number.

It is an amenable number.

68000005 is a deficient number, since it is larger than the sum of its proper divisors (14517395).

68000005 is a wasteful number, since it uses less digits than its factorization.

68000005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152903.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 68000005 is about 8246.2115544048. The cubic root of 68000005 is about 408.1655201958.

The spelling of 68000005 in words is "sixty-eight million, five", and thus it is an aban number and an uban number.