68942437 has 2 divisors, whose sum is σ = 68942438. Its totient is φ = 68942436.

The previous prime is 68942417. The next prime is 68942473. The reversal of 68942437 is 73424986.

Together with next prime (68942473) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 46908801 + 22033636 = 6849^2 + 4694^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68942437 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 68942393 and 68942402.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68942417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34471218 + 34471219.

It is an arithmetic number, because the mean of its divisors is an integer number (34471219).

Almost surely, 2^68942437 is an apocalyptic number.

It is an amenable number.

68942437 is a deficient number, since it is larger than the sum of its proper divisors (1).

68942437 is an equidigital number, since it uses as much as digits as its factorization.

68942437 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 290304, while the sum is 43.

The square root of 68942437 is about 8303.1582545439. The cubic root of 68942437 is about 410.0425040210.

The spelling of 68942437 in words is "sixty-eight million, nine hundred forty-two thousand, four hundred thirty-seven".