136866204 has 18 divisors (see below), whose sum is σ = 345967440. Its totient is φ = 45622056.

The previous prime is 136866187. The next prime is 136866217. The reversal of 136866204 is 402668631.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 3801839 = 136866204 / (1 + 3 + 6 + 8 + 6 + 6 + 2 + 0 + 4).

It is a congruent number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 1900884 + ... + 1900955.

Almost surely, 2^136866204 is an apocalyptic number.

It is an amenable number.

136866204 is an abundant number, since it is smaller than the sum of its proper divisors (209101236).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

136866204 is a wasteful number, since it uses less digits than its factorization.

136866204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3801849 (or 3801844 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 36.

The square root of 136866204 is about 11698.9830327255. The cubic root of 136866204 is about 515.3457997442.

The spelling of 136866204 in words is "one hundred thirty-six million, eight hundred sixty-six thousand, two hundred four".