136640544 has 24 divisors (see below), whose sum is σ = 358681680. Its totient is φ = 45546816.

The previous prime is 136640527. The next prime is 136640551. The reversal of 136640544 is 445046631.

It is a tau number, because it is divible by the number of its divisors (24).

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, 711574 + ... + 711765.

It is an arithmetic number, because the mean of its divisors is an integer number (14945070).

Almost surely, 2^136640544 is an apocalyptic number.

It is an amenable number.

136640544 is an abundant number, since it is smaller than the sum of its proper divisors (222041136).

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

136640544 is a wasteful number, since it uses less digits than its factorization.

136640544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1423352 (or 1423344 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 33.

The square root of 136640544 is about 11689.3346260598. The cubic root of 136640544 is about 515.0624161634.

The spelling of 136640544 in words is "one hundred thirty-six million, six hundred forty thousand, five hundred forty-four".