136336861 has 4 divisors (see below), whose sum is σ = 136360224. Its totient is φ = 136313500.

The previous prime is 136336831. The next prime is 136336867. The reversal of 136336861 is 168633631.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 168633631 = 23 ⋅7331897.

It is a cyclic number.

It is not a de Polignac number, because 136336861 - 2¹⁷ = 136205789 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 136336861.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136336867) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5346 + ... + 17356.

It is an arithmetic number, because the mean of its divisors is an integer number (34090056).

Almost surely, 2^136336861 is an apocalyptic number.

It is an amenable number.

136336861 is a deficient number, since it is larger than the sum of its proper divisors (23363).

136336861 is a wasteful number, since it uses less digits than its factorization.

136336861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23362.

The product of its digits is 46656, while the sum is 37.

The square root of 136336861 is about 11676.3376535624. The cubic root of 136336861 is about 514.6805584898.

The spelling of 136336861 in words is "one hundred thirty-six million, three hundred thirty-six thousand, eight hundred sixty-one".