136609983 has 12 divisors (see below), whose sum is σ = 204634248. Its totient is φ = 91073160.

The previous prime is 136609973. The next prime is 136609999. The reversal of 136609983 is 389906631.

136609983 is a `hidden beast` number, since 1 + 36 + 609 + 9 + 8 + 3 = 666.

It is not a de Polignac number, because 136609983 - 2⁵ = 136609951 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136609933) 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 11 ways as a sum of consecutive naturals, for example, 280848 + ... + 281333.

It is an arithmetic number, because the mean of its divisors is an integer number (17052854).

Almost surely, 2^136609983 is an apocalyptic number.

136609983 is a deficient number, since it is larger than the sum of its proper divisors (68024265).

136609983 is an frugal number, since it uses more digits than its factorization.

136609983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 562196 (or 562184 counting only the distinct ones).

The product of its (nonzero) digits is 209952, while the sum is 45.

The square root of 136609983 is about 11688.0273356970. The cubic root of 136609983 is about 515.0240137104.

The spelling of 136609983 in words is "one hundred thirty-six million, six hundred nine thousand, nine hundred eighty-three".