68350657 has 6 divisors (see below), whose sum is σ = 72137778. Its totient is φ = 64752912.

The previous prime is 68350631. The next prime is 68350661. The reversal of 68350657 is 75605386.

It can be written as a sum of positive squares in only one way, i.e., 51036736 + 17313921 = 7144^2 + 4161^2 .

It is a de Polignac number, because none of the positive numbers 2^k-68350657 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68350057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 94308 + ... + 95029.

It is an arithmetic number, because the mean of its divisors is an integer number (12022963).

Almost surely, 2^68350657 is an apocalyptic number.

It is an amenable number.

68350657 is a deficient number, since it is larger than the sum of its proper divisors (3787121).

68350657 is a wasteful number, since it uses less digits than its factorization.

68350657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189375 (or 189356 counting only the distinct ones).

The product of its (nonzero) digits is 151200, while the sum is 40.

The square root of 68350657 is about 8267.4456151825. The cubic root of 68350657 is about 408.8659061490.

The spelling of 68350657 in words is "sixty-eight million, three hundred fifty thousand, six hundred fifty-seven".