68810357 has 12 divisors (see below), whose sum is σ = 87322176. Its totient is φ = 53618040.

The previous prime is 68810353. The next prime is 68810369. The reversal of 68810357 is 75301886.

It is not a de Polignac number, because 68810357 - 2² = 68810353 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 68810357.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68810351) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 63293 + ... + 64370.

It is an arithmetic number, because the mean of its divisors is an integer number (7276848).

Almost surely, 2^68810357 is an apocalyptic number.

It is an amenable number.

68810357 is a deficient number, since it is larger than the sum of its proper divisors (18511819).

68810357 is a wasteful number, since it uses less digits than its factorization.

68810357 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127688 (or 127681 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 38.

The square root of 68810357 is about 8295.2008414504. The cubic root of 68810357 is about 409.7804833232.

The spelling of 68810357 in words is "sixty-eight million, eight hundred ten thousand, three hundred fifty-seven".