68385739 has 8 divisors (see below), whose sum is σ = 71443872. Its totient is φ = 65334720.

The previous prime is 68385673. The next prime is 68385749. The reversal of 68385739 is 93758386.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-68385739 is a prime.

It is a super-2 number, since 2×68385739² = 9353218597152242, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 68385692 and 68385701.

It is not an unprimeable number, because it can be changed into a prime (68385749) 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, 30687 + ... + 32839.

It is an arithmetic number, because the mean of its divisors is an integer number (8930484).

Almost surely, 2^68385739 is an apocalyptic number.

68385739 is a deficient number, since it is larger than the sum of its proper divisors (3058133).

68385739 is a wasteful number, since it uses less digits than its factorization.

68385739 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3557.

The product of its digits is 1088640, while the sum is 49.

The square root of 68385739 is about 8269.5670382433. The cubic root of 68385739 is about 408.9358463709.

The spelling of 68385739 in words is "sixty-eight million, three hundred eighty-five thousand, seven hundred thirty-nine".