68013937 has 2 divisors, whose sum is σ = 68013938. Its totient is φ = 68013936.

The previous prime is 68013931. The next prime is 68013943. The reversal of 68013937 is 73931086.

It is a balanced prime because it is at equal distance from previous prime (68013931) and next prime (68013943).

It can be written as a sum of positive squares in only one way, i.e., 67914081 + 99856 = 8241^2 + 316^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68013937 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 68013896 and 68013905.

It is not a weakly prime, because it can be changed into another prime (68013931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34006968 + 34006969.

It is an arithmetic number, because the mean of its divisors is an integer number (34006969).

Almost surely, 2^68013937 is an apocalyptic number.

It is an amenable number.

68013937 is a deficient number, since it is larger than the sum of its proper divisors (1).

68013937 is an equidigital number, since it uses as much as digits as its factorization.

68013937 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27216, while the sum is 37.

The square root of 68013937 is about 8247.0562626916. The cubic root of 68013937 is about 408.1933935943.

The spelling of 68013937 in words is "sixty-eight million, thirteen thousand, nine hundred thirty-seven".