68193245 has 16 divisors (see below), whose sum is σ = 83766960. Its totient is φ = 53274624.

The previous prime is 68193241. The next prime is 68193247. The reversal of 68193245 is 54239186.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 13344409 + 54848836 = 3653^2 + 7406^2 .

It is a cyclic number.

It is not a de Polignac number, because 68193245 - 2² = 68193241 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 68193199 and 68193208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68193241) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 72941 + ... + 73869.

It is an arithmetic number, because the mean of its divisors is an integer number (5235435).

Almost surely, 2^68193245 is an apocalyptic number.

It is an amenable number.

68193245 is a deficient number, since it is larger than the sum of its proper divisors (15573715).

68193245 is a wasteful number, since it uses less digits than its factorization.

68193245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1264.

The product of its digits is 51840, while the sum is 38.

The square root of 68193245 is about 8257.9201376618. The cubic root of 68193245 is about 408.5517912908.

The spelling of 68193245 in words is "sixty-eight million, one hundred ninety-three thousand, two hundred forty-five".