136417861 has 4 divisors (see below), whose sum is σ = 136443424. Its totient is φ = 136392300.

The previous prime is 136417859. The next prime is 136417867. The reversal of 136417861 is 168714631.

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.

It is a cyclic number.

It is not a de Polignac number, because 136417861 - 2¹ = 136417859 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 136417861.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136417867) 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, 1395 + ... + 16576.

It is an arithmetic number, because the mean of its divisors is an integer number (34110856).

Almost surely, 2^136417861 is an apocalyptic number.

It is an amenable number.

136417861 is a deficient number, since it is larger than the sum of its proper divisors (25563).

136417861 is an equidigital number, since it uses as much as digits as its factorization.

136417861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25562.

The product of its digits is 24192, while the sum is 37.

The square root of 136417861 is about 11679.8056918769. The cubic root of 136417861 is about 514.7824650751.

The spelling of 136417861 in words is "one hundred thirty-six million, four hundred seventeen thousand, eight hundred sixty-one".