68072605 has 4 divisors (see below), whose sum is σ = 81687132. Its totient is φ = 54458080.

The previous prime is 68072579. The next prime is 68072623. The reversal of 68072605 is 50627086.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 47087044 + 20985561 = 6862^2 + 4581^2 .

It is not a de Polignac number, because 68072605 - 2¹⁹ = 67548317 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 6807256 + ... + 6807265.

It is an arithmetic number, because the mean of its divisors is an integer number (20421783).

Almost surely, 2^68072605 is an apocalyptic number.

It is an amenable number.

68072605 is a deficient number, since it is larger than the sum of its proper divisors (13614527).

68072605 is a wasteful number, since it uses less digits than its factorization.

68072605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13614526.

The product of its (nonzero) digits is 20160, while the sum is 34.

The square root of 68072605 is about 8250.6124015130. The cubic root of 68072605 is about 408.3107274264.

The spelling of 68072605 in words is "sixty-eight million, seventy-two thousand, six hundred five".