68503739 has 2 divisors, whose sum is σ = 68503740. Its totient is φ = 68503738.

The previous prime is 68503733. The next prime is 68503741. The reversal of 68503739 is 93730586.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 68503739 - 2⁴ = 68503723 is a prime.

Together with 68503741, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 68503696 and 68503705.

It is not a weakly prime, because it can be changed into another prime (68503733) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34251869 + 34251870.

It is an arithmetic number, because the mean of its divisors is an integer number (34251870).

Almost surely, 2^68503739 is an apocalyptic number.

68503739 is a deficient number, since it is larger than the sum of its proper divisors (1).

68503739 is an equidigital number, since it uses as much as digits as its factorization.

68503739 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 136080, while the sum is 41.

The square root of 68503739 is about 8276.6985567918. The cubic root of 68503739 is about 409.1709182963.

The spelling of 68503739 in words is "sixty-eight million, five hundred three thousand, seven hundred thirty-nine".