68696549 has 2 divisors, whose sum is σ = 68696550. Its totient is φ = 68696548.

The previous prime is 68696543. The next prime is 68696569. The reversal of 68696549 is 94569686.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 47472100 + 21224449 = 6890^2 + 4607^2 .

It is a cyclic number.

It is not a de Polignac number, because 68696549 - 2⁸ = 68696293 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 68696549.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68696543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34348274 + 34348275.

It is an arithmetic number, because the mean of its divisors is an integer number (34348275).

Almost surely, 2^68696549 is an apocalyptic number.

It is an amenable number.

68696549 is a deficient number, since it is larger than the sum of its proper divisors (1).

68696549 is an equidigital number, since it uses as much as digits as its factorization.

68696549 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2799360, while the sum is 53.

The square root of 68696549 is about 8288.3381325812. The cubic root of 68696549 is about 409.5544416142.

The spelling of 68696549 in words is "sixty-eight million, six hundred ninety-six thousand, five hundred forty-nine".