68306623 has 16 divisors (see below), whose sum is σ = 85510656. Its totient is φ = 53007840.

The previous prime is 68306621. The next prime is 68306633. The reversal of 68306623 is 32660386.

It is a cyclic number.

It is not a de Polignac number, because 68306623 - 2¹ = 68306621 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68306621) 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, 18565 + ... + 21937.

It is an arithmetic number, because the mean of its divisors is an integer number (5344416).

Almost surely, 2^68306623 is an apocalyptic number.

68306623 is a deficient number, since it is larger than the sum of its proper divisors (17204033).

68306623 is a wasteful number, since it uses less digits than its factorization.

68306623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3654.

The product of its (nonzero) digits is 31104, while the sum is 34.

The square root of 68306623 is about 8264.7820902913. The cubic root of 68306623 is about 408.7780851498.

The spelling of 68306623 in words is "sixty-eight million, three hundred six thousand, six hundred twenty-three".