68501501 has 2 divisors, whose sum is σ = 68501502. Its totient is φ = 68501500.

The previous prime is 68501473. The next prime is 68501519. The reversal of 68501501 is 10510586.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 68079001 + 422500 = 8251^2 + 650^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68501501 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68500501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34250750 + 34250751.

It is an arithmetic number, because the mean of its divisors is an integer number (34250751).

Almost surely, 2^68501501 is an apocalyptic number.

It is an amenable number.

68501501 is a deficient number, since it is larger than the sum of its proper divisors (1).

68501501 is an equidigital number, since it uses as much as digits as its factorization.

68501501 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1200, while the sum is 26.

The square root of 68501501 is about 8276.5633568529. The cubic root of 68501501 is about 409.1664624106.

The spelling of 68501501 in words is "sixty-eight million, five hundred one thousand, five hundred one".