68581797 has 8 divisors (see below), whose sum is σ = 91921920. Its totient is φ = 45481440.

The previous prime is 68581787. The next prime is 68581817. The reversal of 68581797 is 79718586.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-68581797 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68581787) 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 7 ways as a sum of consecutive naturals, for example, 59272 + ... + 60417.

It is an arithmetic number, because the mean of its divisors is an integer number (11490240).

Almost surely, 2^68581797 is an apocalyptic number.

It is an amenable number.

68581797 is a deficient number, since it is larger than the sum of its proper divisors (23340123).

68581797 is a wasteful number, since it uses less digits than its factorization.

68581797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119883.

The product of its digits is 846720, while the sum is 51.

The square root of 68581797 is about 8281.4127417971. The cubic root of 68581797 is about 409.3262720550.

It can be divided in two parts, 68581 and 797, that added together give a triangular number (69378 = T₃₇₂).

The spelling of 68581797 in words is "sixty-eight million, five hundred eighty-one thousand, seven hundred ninety-seven".