136687500 has 168 divisors, whose sum is σ = 448431760. Its totient is φ = 36450000.

The previous prime is 136687493. The next prime is 136687513. The reversal of 136687500 is 5786631.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

136687500 is a `hidden beast` number, since 13 + 66 + 87 + 500 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nialpdrome in base 15.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 27337498 + ... + 27337502.

Almost surely, 2^136687500 is an apocalyptic number.

136687500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 136687500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (224215880).

136687500 is an abundant number, since it is smaller than the sum of its proper divisors (311744260).

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

136687500 is an frugal number, since it uses more digits than its factorization.

136687500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55 (or 10 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 136687500 is about 11691.3429510899. The cubic root of 136687500 is about 515.1214091490.

The spelling of 136687500 in words is "one hundred thirty-six million, six hundred eighty-seven thousand, five hundred".