68130697 has 4 divisors (see below), whose sum is σ = 68588100. Its totient is φ = 67673296.

The previous prime is 68130691. The next prime is 68130701. The reversal of 68130697 is 79603186.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 15872256 + 52258441 = 3984^2 + 7229^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68130697 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68130691) 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 3 ways as a sum of consecutive naturals, for example, 228478 + ... + 228775.

It is an arithmetic number, because the mean of its divisors is an integer number (17147025).

Almost surely, 2^68130697 is an apocalyptic number.

It is an amenable number.

68130697 is a deficient number, since it is larger than the sum of its proper divisors (457403).

68130697 is a wasteful number, since it uses less digits than its factorization.

68130697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 457402.

The product of its (nonzero) digits is 54432, while the sum is 40.

The square root of 68130697 is about 8254.1321167037. The cubic root of 68130697 is about 408.4268428724.

The spelling of 68130697 in words is "sixty-eight million, one hundred thirty thousand, six hundred ninety-seven".