68023709 has 8 divisors (see below), whose sum is σ = 73325952. Its totient is φ = 62731440.

The previous prime is 68023699. The next prime is 68023733. The reversal of 68023709 is 90732086.

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 68023709 - 2¹² = 68019613 is a prime.

It is a super-2 number, since 2×68023709² = 9254449972233362, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68023789) 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, 17912 + ... + 21374.

It is an arithmetic number, because the mean of its divisors is an integer number (9165744).

Almost surely, 2^68023709 is an apocalyptic number.

It is an amenable number.

68023709 is a deficient number, since it is larger than the sum of its proper divisors (5302243).

68023709 is a wasteful number, since it uses less digits than its factorization.

68023709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4987.

The product of its (nonzero) digits is 18144, while the sum is 35.

The square root of 68023709 is about 8247.6486952343. The cubic root of 68023709 is about 408.2129419153.

It can be divided in two parts, 680 and 23709, that added together give a cube (24389 = 29³).

The spelling of 68023709 in words is "sixty-eight million, twenty-three thousand, seven hundred nine".