136601917 has 4 divisors (see below), whose sum is σ = 138136860. Its totient is φ = 135066976.

The previous prime is 136601911. The next prime is 136601923. The reversal of 136601917 is 719106631.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (136601911) and next prime (136601923).

It can be written as a sum of positive squares in 2 ways, for example, as 93489561 + 43112356 = 9669^2 + 6566^2 .

It is a cyclic number.

It is not a de Polignac number, because 136601917 - 2⁷ = 136601789 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136601911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 767338 + ... + 767515.

It is an arithmetic number, because the mean of its divisors is an integer number (34534215).

Almost surely, 2^136601917 is an apocalyptic number.

It is an amenable number.

136601917 is a deficient number, since it is larger than the sum of its proper divisors (1534943).

136601917 is an equidigital number, since it uses as much as digits as its factorization.

136601917 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1534942.

The product of its (nonzero) digits is 6804, while the sum is 34.

The square root of 136601917 is about 11687.6822766535. The cubic root of 136601917 is about 515.0138771514.

The spelling of 136601917 in words is "one hundred thirty-six million, six hundred one thousand, nine hundred seventeen".