68808357 has 12 divisors (see below), whose sum is σ = 99896940. Its totient is φ = 45639384.

The previous prime is 68808353. The next prime is 68808359. The reversal of 68808357 is 75380886.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 2 ways, for example, as 65707236 + 3101121 = 8106^2 + 1761^2 .

It is not a de Polignac number, because 68808357 - 2² = 68808353 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68808353) 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, 349183 + ... + 349379.

It is an arithmetic number, because the mean of its divisors is an integer number (8324745).

Almost surely, 2^68808357 is an apocalyptic number.

It is an amenable number.

68808357 is a deficient number, since it is larger than the sum of its proper divisors (31088583).

68808357 is an frugal number, since it uses more digits than its factorization.

68808357 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 597 (or 200 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 45.

The square root of 68808357 is about 8295.0802889424. The cubic root of 68808357 is about 409.7765131412.

The spelling of 68808357 in words is "sixty-eight million, eight hundred eight thousand, three hundred fifty-seven".