136680245 has 16 divisors (see below), whose sum is σ = 177312240. Its totient is φ = 100545024.

The previous prime is 136680241. The next prime is 136680259. The reversal of 136680245 is 542086631.

It can be written as a sum of positive squares in 8 ways, for example, as 83594449 + 53085796 = 9143^2 + 7286^2 .

It is a cyclic number.

It is not a de Polignac number, because 136680245 - 2² = 136680241 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136680241) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13577 + ... + 21393.

It is an arithmetic number, because the mean of its divisors is an integer number (11082015).

Almost surely, 2^136680245 is an apocalyptic number.

It is an amenable number.

136680245 is a deficient number, since it is larger than the sum of its proper divisors (40631995).

136680245 is a wasteful number, since it uses less digits than its factorization.

136680245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8104.

The product of its (nonzero) digits is 34560, while the sum is 35.

The square root of 136680245 is about 11691.0326746614. The cubic root of 136680245 is about 515.1122952409.

The spelling of 136680245 in words is "one hundred thirty-six million, six hundred eighty thousand, two hundred forty-five".