136178797 has 2 divisors, whose sum is σ = 136178798. Its totient is φ = 136178796.

The previous prime is 136178761. The next prime is 136178803. The reversal of 136178797 is 797871631.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 106791556 + 29387241 = 10334^2 + 5421^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-136178797 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 136178797.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (136178297) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68089398 + 68089399.

It is an arithmetic number, because the mean of its divisors is an integer number (68089399).

Almost surely, 2^136178797 is an apocalyptic number.

It is an amenable number.

136178797 is a deficient number, since it is larger than the sum of its proper divisors (1).

136178797 is an equidigital number, since it uses as much as digits as its factorization.

136178797 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 444528, while the sum is 49.

The square root of 136178797 is about 11669.5671299325. The cubic root of 136178797 is about 514.4815809315.

The spelling of 136178797 in words is "one hundred thirty-six million, one hundred seventy-eight thousand, seven hundred ninety-seven".