136645975 has 12 divisors (see below), whose sum is σ = 169888680. Its totient is φ = 109028000.

The previous prime is 136645973. The next prime is 136645981. The reversal of 136645975 is 579546631.

It is not a de Polignac number, because 136645975 - 2¹ = 136645973 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136645973) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2700 + ... + 16750.

It is an arithmetic number, because the mean of its divisors is an integer number (14157390).

Almost surely, 2^136645975 is an apocalyptic number.

136645975 is a deficient number, since it is larger than the sum of its proper divisors (33242705).

136645975 is a wasteful number, since it uses less digits than its factorization.

136645975 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14450 (or 14445 counting only the distinct ones).

The product of its digits is 680400, while the sum is 46.

The square root of 136645975 is about 11689.5669295316. The cubic root of 136645975 is about 515.0692400699.

The spelling of 136645975 in words is "one hundred thirty-six million, six hundred forty-five thousand, nine hundred seventy-five".