68780723 has 16 divisors (see below), whose sum is σ = 77801472. Its totient is φ = 60240000.

The previous prime is 68780711. The next prime is 68780729. The reversal of 68780723 is 32708786.

It is a cyclic number.

It is not a de Polignac number, because 68780723 - 2¹² = 68776627 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68780729) 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 15 ways as a sum of consecutive naturals, for example, 136490 + ... + 136992.

It is an arithmetic number, because the mean of its divisors is an integer number (4862592).

Almost surely, 2^68780723 is an apocalyptic number.

68780723 is a deficient number, since it is larger than the sum of its proper divisors (9020749).

68780723 is a wasteful number, since it uses less digits than its factorization.

68780723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 946.

The product of its (nonzero) digits is 112896, while the sum is 41.

The square root of 68780723 is about 8293.4144355627. The cubic root of 68780723 is about 409.7216492608.

The spelling of 68780723 in words is "sixty-eight million, seven hundred eighty thousand, seven hundred twenty-three".