136607645 has 6 divisors (see below), whose sum is σ = 163960542. Its totient is φ = 109265208.

The previous prime is 136607633. The next prime is 136607693. The reversal of 136607645 is 546706631.

It is a happy number.

136607645 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 109286116 + 27321529 = 10454^2 + 5227^2 .

It is not a de Polignac number, because 136607645 - 2⁸ = 136607389 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 136607599 and 136607608.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 23522 + ... + 28748.

It is an arithmetic number, because the mean of its divisors is an integer number (27326757).

Almost surely, 2^136607645 is an apocalyptic number.

It is an amenable number.

136607645 is a deficient number, since it is larger than the sum of its proper divisors (27352897).

136607645 is an frugal number, since it uses more digits than its factorization.

136607645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10459 (or 5232 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 38.

The square root of 136607645 is about 11687.9273183914. The cubic root of 136607645 is about 515.0210755820.

The spelling of 136607645 in words is "one hundred thirty-six million, six hundred seven thousand, six hundred forty-five".