136505630 has 8 divisors (see below), whose sum is σ = 245710152. Its totient is φ = 54602248.

The previous prime is 136505623. The next prime is 136505651. The reversal of 136505630 is 36505631.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 136505593 and 136505602.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6825272 + ... + 6825291.

It is an arithmetic number, because the mean of its divisors is an integer number (30713769).

Almost surely, 2^136505630 is an apocalyptic number.

136505630 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

136505630 is a deficient number, since it is larger than the sum of its proper divisors (109204522).

136505630 is a wasteful number, since it uses less digits than its factorization.

136505630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13650570.

The product of its (nonzero) digits is 8100, while the sum is 29.

The square root of 136505630 is about 11683.5623848208. The cubic root of 136505630 is about 514.8928422538.

Subtracting from 136505630 its reverse (36505631), we obtain a palindrome (99999999).

The spelling of 136505630 in words is "one hundred thirty-six million, five hundred five thousand, six hundred thirty".