136640553 has 8 divisors (see below), whose sum is σ = 208214208. Its totient is φ = 78080304.

The previous prime is 136640551. The next prime is 136640557. The reversal of 136640553 is 355046631.

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

It is not a de Polignac number, because 136640553 - 2¹ = 136640551 is a prime.

It is not an unprimeable number, because it can be changed into a prime (136640551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3253326 + ... + 3253367.

It is an arithmetic number, because the mean of its divisors is an integer number (26026776).

Almost surely, 2^136640553 is an apocalyptic number.

It is an amenable number.

136640553 is a deficient number, since it is larger than the sum of its proper divisors (71573655).

136640553 is an equidigital number, since it uses as much as digits as its factorization.

136640553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6506703.

The product of its (nonzero) digits is 32400, while the sum is 33.

The square root of 136640553 is about 11689.3350110261. The cubic root of 136640553 is about 515.0624274718.

The spelling of 136640553 in words is "one hundred thirty-six million, six hundred forty thousand, five hundred fifty-three".