136521360 has 60 divisors (see below), whose sum is σ = 458486652. Its totient is φ = 36405504.

The previous prime is 136521347. The next prime is 136521361. The reversal of 136521360 is 63125631.

136521360 is a `hidden beast` number, since 1 + 3 + 652 + 1 + 3 + 6 + 0 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 68161536 + 68359824 = 8256^2 + 8268^2 .

It is a tau number, because it is divible by the number of its divisors (60).

It is not an unprimeable number, because it can be changed into a prime (136521361) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 94087 + ... + 95526.

Almost surely, 2^136521360 is an apocalyptic number.

136521360 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

136521360 is an abundant number, since it is smaller than the sum of its proper divisors (321965292).

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

136521360 is a wasteful number, since it uses less digits than its factorization.

136521360 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189632 (or 189623 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 27.

The square root of 136521360 is about 11684.2355334014. The cubic root of 136521360 is about 514.9126191019.

Adding to 136521360 its reverse (63125631), we get a palindrome (199646991).

The spelling of 136521360 in words is "one hundred thirty-six million, five hundred twenty-one thousand, three hundred sixty".