136973 has 2 divisors, whose sum is σ = 136974. Its totient is φ = 136972.

The previous prime is 136963. The next prime is 136979. The reversal of 136973 is 379631.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 131044 + 5929 = 362^2 + 77^2 .

It is a cyclic number.

It is not a de Polignac number, because 136973 - 2¹⁶ = 71437 is a prime.

It is an Ulam number.

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 136973.

It is not a weakly prime, because it can be changed into another prime (136979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68486 + 68487.

It is an arithmetic number, because the mean of its divisors is an integer number (68487).

2¹³⁶⁹⁷³ is an apocalyptic number.

It is an amenable number.

136973 is a deficient number, since it is larger than the sum of its proper divisors (1).

136973 is an equidigital number, since it uses as much as digits as its factorization.

136973 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 136973 is about 370.0986355014. The cubic root of 136973 is about 51.5479805461.

The spelling of 136973 in words is "one hundred thirty-six thousand, nine hundred seventy-three".