136209601 has 4 divisors (see below), whose sum is σ = 148592304. Its totient is φ = 123826900.

The previous prime is 136209581. The next prime is 136209637. The reversal of 136209601 is 106902631.

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 136209601 - 2¹³ = 136201409 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 136209601.

It is not an unprimeable number, because it can be changed into a prime (136209001) 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, 6191335 + ... + 6191356.

It is an arithmetic number, because the mean of its divisors is an integer number (37148076).

Almost surely, 2^136209601 is an apocalyptic number.

136209601 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

136209601 is a deficient number, since it is larger than the sum of its proper divisors (12382703).

136209601 is a wasteful number, since it uses less digits than its factorization.

136209601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12382702.

The product of its (nonzero) digits is 1944, while the sum is 28.

The square root of 136209601 is about 11670.8868986037. The cubic root of 136209601 is about 514.5203703666.

The spelling of 136209601 in words is "one hundred thirty-six million, two hundred nine thousand, six hundred one".