68544037 has 2 divisors, whose sum is σ = 68544038. Its totient is φ = 68544036.

The previous prime is 68544029. The next prime is 68544067. The reversal of 68544037 is 73044586.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 35354916 + 33189121 = 5946^2 + 5761^2 .

It is a cyclic number.

It is not a de Polignac number, because 68544037 - 2³ = 68544029 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 68543987 and 68544005.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68544067) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34272018 + 34272019.

It is an arithmetic number, because the mean of its divisors is an integer number (34272019).

Almost surely, 2^68544037 is an apocalyptic number.

It is an amenable number.

68544037 is a deficient number, since it is larger than the sum of its proper divisors (1).

68544037 is an equidigital number, since it uses as much as digits as its factorization.

68544037 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 80640, while the sum is 37.

The square root of 68544037 is about 8279.1326236509. The cubic root of 68544037 is about 409.2511355114.

The spelling of 68544037 in words is "sixty-eight million, five hundred forty-four thousand, thirty-seven".