68016357 has 6 divisors (see below), whose sum is σ = 98245862. Its totient is φ = 45344232.

The previous prime is 68016353. The next prime is 68016407. The reversal of 68016357 is 75361086.

It can be written as a sum of positive squares in only one way, i.e., 67667076 + 349281 = 8226^2 + 591^2 .

It is not a de Polignac number, because 68016357 - 2² = 68016353 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68016353) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3778678 + ... + 3778695.

Almost surely, 2^68016357 is an apocalyptic number.

It is an amenable number.

68016357 is a deficient number, since it is larger than the sum of its proper divisors (30229505).

68016357 is a wasteful number, since it uses less digits than its factorization.

68016357 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7557379 (or 7557376 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 68016357 is about 8247.2029804049. The cubic root of 68016357 is about 408.1982348388.

The spelling of 68016357 in words is "sixty-eight million, sixteen thousand, three hundred fifty-seven".