136397 has 2 divisors, whose sum is σ = 136398. Its totient is φ = 136396.

The previous prime is 136393. The next prime is 136399. The reversal of 136397 is 793631.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 90601 + 45796 = 301^2 + 214^2 .

It is a cyclic number.

It is not a de Polignac number, because 136397 - 2² = 136393 is a prime.

Together with 136399, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 136397.

It is not a weakly prime, because it can be changed into another prime (136393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68198 + 68199.

It is an arithmetic number, because the mean of its divisors is an integer number (68199).

2¹³⁶³⁹⁷ is an apocalyptic number.

It is an amenable number.

136397 is a deficient number, since it is larger than the sum of its proper divisors (1).

136397 is an equidigital number, since it uses as much as digits as its factorization.

136397 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3402, while the sum is 29.

The square root of 136397 is about 369.3196447523. The cubic root of 136397 is about 51.4756223584.

The spelling of 136397 in words is "one hundred thirty-six thousand, three hundred ninety-seven".