136086997 has 2 divisors, whose sum is σ = 136086998. Its totient is φ = 136086996.

The previous prime is 136086991. The next prime is 136087013. The reversal of 136086997 is 799680631.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 126315121 + 9771876 = 11239^2 + 3126^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-136086997 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 136086997.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (136086991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68043498 + 68043499.

It is an arithmetic number, because the mean of its divisors is an integer number (68043499).

Almost surely, 2^136086997 is an apocalyptic number.

It is an amenable number.

136086997 is a deficient number, since it is larger than the sum of its proper divisors (1).

136086997 is an equidigital number, since it uses as much as digits as its factorization.

136086997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 489888, while the sum is 49.

The square root of 136086997 is about 11665.6331589846. The cubic root of 136086997 is about 514.3659485746.

The spelling of 136086997 in words is "one hundred thirty-six million, eighty-six thousand, nine hundred ninety-seven".