136865530 has 8 divisors (see below), whose sum is σ = 246357972. Its totient is φ = 54746208.

The previous prime is 136865461. The next prime is 136865537. The reversal of 136865530 is 35568631.

It can be written as a sum of positive squares in 2 ways, for example, as 136399041 + 466489 = 11679^2 + 683^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 136865530.

It is not an unprimeable number, because it can be changed into a prime (136865537) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 6843267 + ... + 6843286.

Almost surely, 2^136865530 is an apocalyptic number.

136865530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

136865530 is a deficient number, since it is larger than the sum of its proper divisors (109492442).

136865530 is a wasteful number, since it uses less digits than its factorization.

136865530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13686560.

The product of its (nonzero) digits is 64800, while the sum is 37.

The square root of 136865530 is about 11698.9542267675. The cubic root of 136865530 is about 515.3449537997.

It can be divided in two parts, 1368655 and 30, that added together give a triangular number (1368685 = T₁₆₅₄).

The spelling of 136865530 in words is "one hundred thirty-six million, eight hundred sixty-five thousand, five hundred thirty".