136786361 has 2 divisors, whose sum is σ = 136786362. Its totient is φ = 136786360.

The previous prime is 136786343. The next prime is 136786409. The reversal of 136786361 is 163687631.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 111091600 + 25694761 = 10540^2 + 5069^2 .

It is a cyclic number.

It is not a de Polignac number, because 136786361 - 2²⁶ = 69677497 is a prime.

It is a super-3 number, since 3×136786361³ (a number of 25 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (136786261) 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 as a sum of consecutive naturals, namely, 68393180 + 68393181.

It is an arithmetic number, because the mean of its divisors is an integer number (68393181).

Almost surely, 2^136786361 is an apocalyptic number.

It is an amenable number.

136786361 is a deficient number, since it is larger than the sum of its proper divisors (1).

136786361 is an equidigital number, since it uses as much as digits as its factorization.

136786361 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 108864, while the sum is 41.

The square root of 136786361 is about 11695.5701442897. The cubic root of 136786361 is about 515.2455686249.

The spelling of 136786361 in words is "one hundred thirty-six million, seven hundred eighty-six thousand, three hundred sixty-one".