68137586 has 16 divisors (see below), whose sum is σ = 112187808. Its totient is φ = 30780000.

The previous prime is 68137583. The next prime is 68137621. The reversal of 68137586 is 68573186.

It is a super-3 number, since 3×68137586³ (a number of 24 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (68137583) 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 7 ways as a sum of consecutive naturals, for example, 5915 + ... + 13086.

It is an arithmetic number, because the mean of its divisors is an integer number (7011738).

Almost surely, 2^68137586 is an apocalyptic number.

68137586 is a deficient number, since it is larger than the sum of its proper divisors (44050222).

68137586 is a wasteful number, since it uses less digits than its factorization.

68137586 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19177.

The product of its digits is 241920, while the sum is 44.

The square root of 68137586 is about 8254.5494122938. The cubic root of 68137586 is about 408.4406083644.

Subtracting 68137586 from its reverse (68573186), we obtain a square (435600 = 660²).

The spelling of 68137586 in words is "sixty-eight million, one hundred thirty-seven thousand, five hundred eighty-six".