68258437 has 4 divisors (see below), whose sum is σ = 73509100. Its totient is φ = 63007776.

The previous prime is 68258423. The next prime is 68258447. The reversal of 68258437 is 73485286.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6022116 + 62236321 = 2454^2 + 7889^2 .

It is a de Polignac number, because none of the positive numbers 2^k-68258437 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 68258393 and 68258402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68258447) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2625312 + ... + 2625337.

It is an arithmetic number, because the mean of its divisors is an integer number (18377275).

Almost surely, 2^68258437 is an apocalyptic number.

It is an amenable number.

68258437 is a deficient number, since it is larger than the sum of its proper divisors (5250663).

68258437 is a wasteful number, since it uses less digits than its factorization.

68258437 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5250662.

The product of its digits is 322560, while the sum is 43.

The square root of 68258437 is about 8261.8664356185. The cubic root of 68258437 is about 408.6819401812.

The spelling of 68258437 in words is "sixty-eight million, two hundred fifty-eight thousand, four hundred thirty-seven".