136520635 has 4 divisors (see below), whose sum is σ = 163824768. Its totient is φ = 109216504.

The previous prime is 136520627. The next prime is 136520651. The reversal of 136520635 is 536025631.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 536025631 = 887 ⋅604313.

It is a cyclic number.

It is not a de Polignac number, because 136520635 - 2³ = 136520627 is a prime.

It is a super-3 number, since 3×136520635³ (a number of 25 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 136520597 and 136520606.

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 3 ways as a sum of consecutive naturals, for example, 13652059 + ... + 13652068.

It is an arithmetic number, because the mean of its divisors is an integer number (40956192).

Almost surely, 2^136520635 is an apocalyptic number.

136520635 is a deficient number, since it is larger than the sum of its proper divisors (27304133).

136520635 is an equidigital number, since it uses as much as digits as its factorization.

136520635 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27304132.

The product of its (nonzero) digits is 16200, while the sum is 31.

The square root of 136520635 is about 11684.2045086518. The cubic root of 136520635 is about 514.9117076150.

The spelling of 136520635 in words is "one hundred thirty-six million, five hundred twenty thousand, six hundred thirty-five".