68247305 has 16 divisors (see below), whose sum is σ = 95364864. Its totient is φ = 45913920.

The previous prime is 68247287. The next prime is 68247341. The reversal of 68247305 is 50374286.

It is a happy number.

It is not a de Polignac number, because 68247305 - 2¹⁰ = 68246281 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is an unprimeable number.

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, 16541 + ... + 20250.

It is an arithmetic number, because the mean of its divisors is an integer number (5960304).

Almost surely, 2^68247305 is an apocalyptic number.

It is an amenable number.

68247305 is a deficient number, since it is larger than the sum of its proper divisors (27117559).

68247305 is a wasteful number, since it uses less digits than its factorization.

68247305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36856.

The product of its (nonzero) digits is 40320, while the sum is 35.

The square root of 68247305 is about 8261.1927104989. The cubic root of 68247305 is about 408.6597221966.

The spelling of 68247305 in words is "sixty-eight million, two hundred forty-seven thousand, three hundred five".